Real Madrid must treat Thibaut Courtois differently to get the best out of him, according to Belgium goalkeeper coach Erwin Lemmens.
Courtois was substituted at half-time in Tuesday's 2-2 Champions League draw against Club Brugge, with Madrid 2-0 down at the time.
The 27-year-old was arguably at fault for Emmanuel Bonaventure Dennis' ninth-minute opener and was again beaten by the Brugge striker later in the half.
Courtois' early withdrawal was put down to illness by boss Zinedine Zidane, but Lemmens has accused Madrid of failing to get the most out of a player that previously impressed for Atletico Madrid and Chelsea.