In the past they have been many loyal players to clubs
the Maldini Family is one of them
but in my opinion Del Piero is the mosty loyal player i have ever seen.
he stayed with the club most of his life and even the Seria B. yeah trezeguet and what not also stayed but the pick of them all is Del Piero
this comes to the disloyal player, unfortunatly the greatest is one of them
Ronaldo signed with corinthians but their rivals and Ronaldo's favourite club Flammengo are furious. they let Ronaldo use their facility's and even train with them when he was coming back from his injury. when everything looked set for ronaldo to move to Flamengo, they had a disagreement with NIKE and broke the contract then out of the blue ronaldo sighned with Corinthians. A bit disloyal.
Flammengo are threatening legal action against Nike and a formal letter has been sent by the Flammengo President