Louis van Gaal will warn Adnan Januzaj that there must be a marked improvement in his attitude and application if the Belgium winger wants to force his way back into Manchester United’s first team.

United confirmed yesterday that Januzaj had returned to Manchester after Borussia Dortmund agreed to the club’s request to cut short his miserable season-long loan, as first revealed by The Times.

Michael Zorc, the Dortmund sporting director, admitted yesterday that the arrangement had been a failure but Januzaj is returning to Manchester only because he asked to do so and the 20-year-old faces a battle to prove to Van Gaal that he has the character to succeed at Old Trafford. He cannot go on loan again as he has played for