Finnan has been a consistently excellent defender since Rafael Benitez arrived at Liverpool 18 months ago. Benitez has praised the Irish international and says he is an important part of the Liverpool team.
"Finnan is a player who will always play at a consistent level," said Benitez.
"He will be seven, eight, nine or even ten out of ten every week. This is really important for the team. Some players find a good level for individual games, but don't do the same every week. Finnan does it for a whole season.
"The added competitiveness of Jan Kromkamp will also be good for him and the team and help him maintain his current level."
