Former Leeds United goalkeeper Paul Robinson has urged fans not to expect an instant impact from Marc Roca.
The Spain midfielder moved to Leeds last week from Bayern Munich.
Robinson said: "He's not proven himself at Bayern Munich, which is why he's had to move on."
Robinson added: "It's signing a potentially good player. It's not signing a player that's been playing week in and week out in the Bundesliga."
He went on to add that he didn't see Roca as a good enough replacement to cover the possible departures of Raphinha and Kalvin Phillips.