But Valverde has claimed that he is yet to decide if the Argentine will play on Tuesday.
"We will decide tomorrow [if Messi can play]," Valverde said at Barcelona's pre-match press conference.
"A few days ago we were not very clear, but the last training ended well and he is no longer thinking about the pain he had.
"It is important to play without thinking.
"He has improved a lot, but we will see tomorrow."