Silva bid farewell to the Premier League in Sunday's 5-0 win over Norwich City after 10 years at the Etihad Stadium.
The Spain international joined City from Valencia in 2010 and won four Premier League titles, two FA Cups and five League Cups during his time with the Sky Blues.
Now 34, the playmaker can look back on an incredible career which begun with Los Che in 2000.
Carboni rewarded Silva with a new contract after his stint with Eibar and has no doubt his "big bet" paid off.
It is unclear where Silva will arrive next and he has no shortage of options.
Clubs in Major League Soccer, Qatar, Spain and Japan have all shown an interest in acquiring the World Cup winner.