Ralf Rangnick has warned Erik ten Hag "there is a lot of work" to do when he becomes Manchester United manager this summer.
The Red Devils suffered a 3-1 defeat to Arsenal at the Emirates on Saturday after goals from Nuno Tavares, Bukayo Saka and Granit Xhaka. Cristiano Ronaldo scored United's goal - his 100th in the Premier League - while Bruno Fernandes missed a penalty.
Ten Hag was confirmed as interim manager Rangnick's successor, starting his new role at the end of the season. The Dutchman has won five trophies since becoming Ajax boss in December 2017 and is aiming to lift a sixth - the Eredivisie title - before joining United.