He limped off in tears during Sunday's afternoon’s 1-1 draw with SPAL at the Stadio Mazza.
The full-back fell awkwardly when his knee seemed to buckle, but after some quick tests with the medical staff and some ‘magic spray,’ he was given the all-clear to continue.
A few minutes later, Malcuit crumpled to the ground in agony and had to be helped off the pitch.
According to Sky Sport Italia, it’s feared to be an ACL tear and that would require around four months off the pitch.
He will have tests these hours before deciding on a course of action.