The World Player of the Year missed training and needed physiotherapy on Friday after coming off as a precaution late in Thursday's Copa del Rey quarter-final second leg win at Malaga.
"The Argentine forward will be available for selection for the next league fixture," Barca said in a statement on their website (www.fcbarcelona.es).
The La Liga leaders are looking to get back to winning ways against Osasuna after their unbeaten start to the campaign was ended last weekend by a 3-2 defeat at Real Sociedad.
They still have an eight-point lead over second-placed Atletico Madrid, who play at Athletic Bilbao on Sunday, with champions Real Madrid a further seven points back in third.
Jose Mourinho's Real side, who this week lost captain and goalkeeper Iker Casillas to a broken hand, host Getafe on Sunday before Barca visit the Bernabeu on Wednesday for the first leg of their Copa semi-final.
- Sports & Recreation
- Copa del Rey