The two Liverpool players will face each other at Croke Park tomorrow when the Republic of Ireland host Wales in a European Championship qualifying match. Finnan is expecting a tough time.
"He is a very good player who can cause a lot of problems," said Finnan about his Reds team-mate.
"I've got to know him first-hand this season, and he is someone who will not give the defenders any time on the ball.
"He is willing to run into the space, and that makes him a difficult player to play against."