Lionel Messi will miss Barcelona’s Spanish league match this weekend because of his hamstring injury, but may be fit to play in the Champions League return leg against Paris Saint-Germain. Messi was substituted at halftime of Tuesday’s 2-2 draw against PSG in Paris, having scored the first goal of the game before injuring his right leg. Barcelona said Messi will definitely miss Saturday’s game against Mallorca, “whilst his availability after that will depend on how the injury progresses.” Fellow Argentina player Javier Mascherano ruptured a right knee ligament Tuesday after teammate Jordi Alba fell on top of his leg late in the second half. Barcelona said he was expected to be sidelined for an “estimated six weeks.” “I will return soon, thankfully it was not so serious,” Messi said on his Facebook page. “We are so sorry for Masche [Mascherano], we will give our support he returns as soonest as possible.” Messi suffered a similar injury to his current one in March 2008 against Celtic in the Champions League quarterfinals, and was then sidelined for five weeks.