Manchester United boss Jose Mourinho has praised the contribution of Romelu Lukaku but feels the striker is slightly fatigued.
Lukaku was a big-money summer signing for the Red Devils and began his Old Trafford career in sensational style, scoring goals for fun.
However his return has diminished significantly over the past few months, with the Belgium international coming in for criticism from pundits and fans alike.
Mourinho has continually backed the former Everton hit-man, who has played every minute of United;s 20 top-flight games this term, scoring 10 goals in the process.
Far from having a dig at his currently lack of productivity, the Portuguese tactician feels he owes a debt of gratitude to the powerful striker.
"I have to be grateful to Romelu," he told a press conference. "For striker in Premier League to play 20 matches, all 90 minutes, says a lot about his personality and character."
A couple of defensive mistakes from Lukaku have contributed to United losing points and the manager feels that errors can creep in due to tired legs.
"He was in the picture in some of the last goals we concede but all is a consequence of a player who really needs a little rest," he added.