Barcelona striker Thierry Henry has pledged his support for stricken team-mate Lionel Messi, who picked up a hamstring injury in the 1-0 Champions League win over Celtic and could be out for six weeks.

The Argentina international left the field in tears after sustaining the injury and is expected to miss around six league games, as well as the Copa del Rey semi-final second leg against Valencia and both of Barca's Champions League quarter-final matches.

Despite the blow of losing one of the team's star performers at such a crucial stage of the season, Henry feels that Messi can still have an impact on Barcelona's season.

He told the club's official website: "We all saw how Leo felt.

"All Barca fans suffered on Tuesday. But I believe it's especially difficult for him. He's done some incredible things this season.

"The most important thing for him is that he recovers and comes back at a time that we hope will be important for us.

"Leo is Leo and it will be very difficult for us to cover his absence.

"But we have Samuel [Eto'o], Ronaldinho, Xavi... We need the whole squad. "

"He's very important because he always makes a difference and it's very difficult to play without a footballer like him. But we have to do it.

Tom Williams / Eurosport