Barcelona coach Xavi Hernandez says it will be difficult to sign Bayern Munich striker Robert Lewandowski this summer.

In recent weeks the Blaugrana have been strongly linked with Lewandowski, who has stated he will not sign a new deal at the Allianz Arena.

"Lewandowski is one of the options, one of the possibilities," Xavi said during Saturday's pre-match press conference.

"There are negotiations, he has one year on his contract left. It won't be easy.

"[Barcelona president Joan] Laporta told me we'll be able to reinforce the team, there's confidence."