Ruben Amorim has said his Manchester United side are causing him to be "anxious" and "nervous" while the players get to grips with his tactical demands.
Amorim recorded his first victory as United boss with a 3-2 win over Bodo/Glimt in the Europa League on Thursday.
The Norwegian side briefly led 2-1 in the first half and the Portuguese coach has admitted watching his team in the early weeks of his reign is nerve-shredding.
"I get anxious because I don't know what will happen -- you don't control nothing at the moment -- we are trying to see different things," Amorim told TNT Sports.