Only three clubs in Europe have fielded this season players who have been in the first team squad since more than five years on average: Real Madrid (5.84 years), Barcelona (5.36) and Bayern Munich (5.26). Issue number 236 of the CIES Football Observatory Weekly Post also reveals that another Champions League participant, Viktoria Plze?, is the most stable club outside of the big-5 (4.28 years).

The majority of teams with the highest stability figures are among the most competitive teams in their respective leagues. The opposite holds true for the least stable clubs. The lowest stability levels were recorded for the Croatian team Istra (0.15 years) among the 31 top divisions surveyed and for the Italian side Parma (0.65 years) at big-5 league level.

The data for all teams in the competitions analysed is available in the exclusive CIES Football Observatory Demographic Atlas. Monthly Reports number 34 and number 38 discuss from multiple angles the link between stability and success. More analysis is also presented on a daily basis from our Twitter account. Follow us!

The CIES Football Observatory just published its 38th Monthly Report. The study analyses club strategies in the area of player turnover for the five major European leagues since 2005/06. It reveals that too many changes in line-ups do not constitute a good strategy for optimising results. On the contrary, high turnover levels tend to affect players’ confidence and aggravate the situation.

Seventeen of the twenty teams whose 11 most fielded footballers played for the least percentage of minutes relegated. This is a clear reflection of the real danger faced by clubs of finding themselves trapped in a vicious circle of poor results and instability, and vice versa. The existence of a negative correlation between turnover and points per match confirms the relevance of sticking with a core group of footballers to optimise performance.

The only team in the period studied that fielded less than 20 players over a season was Borussia Mönchengladbach in 2014/15. This did not prevent them from finishing in an excellent third place. That season, the team coached by Lucien Favre also participated in the Europa League, where it reached the last 16. While the achievement of good results reduces the incentives for player turnover, the Report shows that low player turnover in turn favours good results.

Issue number 235 of the CIES Football Observatory Weekly Post highlights teams having fielded the youngest and oldest line-ups in domestic league games so far this season (or since 1st of July for summer leagues). The extreme values at big-5 league level were recorded for two Italian teams: Fiorentina (23.79 years) and Chievo (29.53 years).

Danish side Nordsjaelland fielded the youngest line-ups for the 31 European top division leagues surveyed: 21.36 years on average. Two clubs from the youngest competition analysed, Croatia, rank second and third: NK Rudeš and NK Istra 1961. Four Turkish and three Cypriot teams are among the ten clubs having fielded the oldest line-ups. The highest figure overall was recorded for Europa League participants Apollon Limassol (30.93 years).

The data for all teams from the 31 top divisions studied are available for free in the exclusive CIES Football Observatory Demographic Atlas. This unique tool also presents the on-the-pitch figures for club-trained, expatriates, stability, turnover and height. Enjoy!

Issue number 234 of the CIES Football Observatory Weekly Post ranks clubs across Europe according to the number of minutes per shot attempted. The following teams head the table in the five major European leagues: Manchester City, Juventus, Olympique Lyonnais, Barcelona and Bayern Munich. Slavia Praha tops the rankings outside of the big-5.

So far this season, Manchester City players only needed 4’02” to take a shot. At the opposite end of the table, Huddersfield Town is the Premier League team needing the most minutes to shot: 12’08”. The highest figure overall in the 35 competitions surveyed was recorded for Hamilton Academical (Scotland): 18’12”.

The biggest gap within the same league was observed in Greece: from 5’00” for Olympiacos up to 18’07” for Panetolikos. Data used comes from OptaPro for the big-5 leagues and the English Championship and InStat for the remaining competitions. More information is published from our Twitter account or available on demand at football.observatory@cies.ch.

Manchester City has spent almost €1 billion in transfer indemnities to sign its present squad members (add-ons included). This is the highest figure ever measured for a football team. Issue number 233 of the CIES Football Observatory Weekly Post presents the data for all of the big-5 league teams.

Seven English Premier League teams are in the 11 top positions of the table. The biggest increase compared to last year was measured for Liverpool (from €437M to €704M). The Spanish giants (Barcelona and Real Madrid), Juventus and Paris St-Germain (2nd overall) are the only non-English teams in the top 11. The best-ranked German Bundesliga club, Bayern Munich, is 12th.

Total transfer expenditure to make up the squad for clubs from the five major European leagues went constantly up during the last decade. In 2010, a big-5 league had spent on average €67M to sign its squad members. In 2018, this figure reached a new record high of €161M. During the same period, the amounts invested to assemble the squad by English Premier League clubs went up from €126M to €326M.

The first CIES Football Observatory Weekly Post of the 2018/19 season assesses from an economic perspective paid transfers having taken place during last summer. It highlights that Thibault Courtois went to Real Madrid for a much lower amount than the estimated fair price (-€23 M). Conversely, Chelsea FC paid over the odds to recruit his substitute: Kepa Arrizabalaga (+€45 M).

The fair price corresponds to the average between the estimated cost for the most likely buyer before the transfer and the current transfer value. Both figures were calculated using the exclusive CIES Football Observatory algorithm. The correlation between fees estimated and reported for players transferred for money from big-5 league teams during last transfer window was 75%.

Rodri Hernández, Bryan Cristante, Fabinho Tavares and Clément Lenglet are alongside Thibaut Courtois in the top five for the best operations from an engaging club perspective. For Rodri and Lenglet, the existence of a release clause helped recruiting teams to sign them at a favourable price. As for Kepa Arrizabalaga, the CIES Football Observatory analysis reveals that releasing teams negotiated very well the transfers of Riyad Mahrez, Thilo Kehrer, Yerry Mina and Alex Meret.