The eldest player to have played in the Champions League was Marco Ballotta. He was 43 years and 253 days old.
The shortest person to play in the champions league is Jernade Meade of Arsenal at 5'3" against Olympiakos
Ofcourse he can play in the Champions League with a team even if has previously played with another team. But if a player has represented a club in a particular season the CL he cannot then play for another club in the same year's CL.
Not in the same season. The player can't be registered for the competition with the second and will be 'cup-tied'.
A team has to WIN the Champions league play-off to qualify for the CL. If arsenal lose, then they dont get to play in the Champions League.
It is Christiano Rolando.