Conversation so far:
What is Villarreal?
In May 2006, Pires agreed to join Spanish side Villarreal.
How long did he stay there?
Pires was told in May 2010 that his contract would not be extended.
Did he retire after that?
CANNOTANSWER.

Question: What position did he play?
Self-contained rewrite: What position did Robert Pires play?