Barcelona could reportedly struggle to sell Samuel Umtiti during this summer's transfer window as many interested clubs are concerned by the centre-back's injury record.
Umtiti joined Barca from Lyon in 2016 and made 83 appearances during his first two seasons at the club.
A knee problem restricted the France international to just 15 outings last term, though, while he has only made 11 La Liga appearances this season due to injury.
The 26-year-old continues to be linked with a move away from Camp Nou, but according to AS, several interested clubs have demanded an 'exhaustive medical examination' of the centre-back's troublesome knee before committing to a deal.
The report claims that the cartilage issue forces Umtiti to have synovial fluid drained from the area every month, which is a concern for potential buyers.
The 2018 World Cup winner, who has been linked with Arsenal and Manchester United, still has more than three years left to run on his contract with Quique Setien's side.
