Conversation so far:
Did Larsson play for Barcelona?
At the end of the 2003-04 season, Larsson left Celtic on a free transfer and signed a one-year contract with Barcelona.
What happened when the contract was over?
Larsson's contribution in Barca's La Liga win in his first season there was disrupted by serious injury.

Question: What was the injury?
Self-contained rewrite: What was Larsson's injury?