The summer signing has deputised in the absence of Real Madrid target David De Gea, conceding only one goal in five games but the Red Devil’s boss remains critical that the 28-year-old must keep delivering like he has.
Romero has conceded only one goal in five outings for his new club and that came in as an own goal from Micheal Carrick against Club Brugge.
“I don’t think so,” he told reporters when asked if his goalkeeper has proved his worth for the team.
“Until now we don’t allow a lot of shots or moments in our 16-metre area. He could not show what he can show, I think, but that is only a compliment for the team.”
Van Gaal has admitted they have been forced to rush him into the setup to help him settle into the team.
He said: “He has played a lot of matches in the Argentina team in the Copa America. The difficulty was the co-operation between the new players and him.
“We have had special training sessions with him. Not only with him and the goalkeeping coach [Frans Hoek] but also the players.
“We have given a lot of attention to that and because of that we could overcome that.”