Arda Turan faces a spell in the treatment room after suffering an ankle injury during pre-season training in the USA.
The Turkish international will undergo a scan to determine the severity of the injury. Turan also missed a day of training last week due to a foot injury.
Barcelona confirmed the news on their official website with the following statement, “Arda Turan twisted his ankle during Friday morning training and the verdict is that he has a second degree sprain in the external ligaments.
“He will now need to be subjected to more thorough testing which should shed more light on his availability over the next few days.”
The 28-year-old recently completed his £24 million transfer from Atletico Madrid to Barcelona. Turan signed a five-year deal with the La Liga champions reported to be worth £6 million per-season.
Barcelona can sign players but cannot register them until at least January. Turan will not be able to play a professional game for the La Liga champions until the new year.
The Turkish international was expected to feature in the pre-season but the transfer ban also applies to friendly games.
Turan provided six assists and scored three goals in 46 appearances for Atletico Madrid last season.