Manchester United manager Ole Gunnar Solskjaer has warned fans that Bruno Fernandes cannot maintain his form and there will be days he will be 'off'.
The Portuguese has been a revelation ever since he was signed from Sporting Lisbon in January, much to the excitement of the club's fans.
The Norwegian has also joined the club's faithful in praising their new-found hero but knows the honeymoon won't last forever.
"He's definitely raised everybody; players, staff, and supporters because he's given us a big boost by his performances," Solskjaer told NBC Sports.
"We can't demand or expect him to continue like this. Of course, we hope so.
"I can't see any reason why not but sometimes it just clicks for you early on and you hit a difficult patch.
"But he's the type of lad who will get through that because he loves football.
"He's old fashioned: 'I know everything about football, I love football, I don't care about money, I just want to win'.
"It's been a big boost for everyone."
He has also shown leadership qualities on and off the pitch, according to Solskjaer.
"He's smiley, polite, demanding," Solskjaer said.
Fernandes is expected to be key for United when they host Manchester City in a derby match at Old Trafford on Sunday.