Manchester United legend Bryan Robson believes Paul Pogba's absence has had a detrimental impact on the form of Romelu Lukaku.
The United striker started the season in sensational form, scoring 11 goals in his first 10 games, but has dipped in recent weeks.
Since his late strike against Crystal Palace, Lukaku has gone six games without finding the net.
And Old Trafford great Robson believes he has struggled since Pogba picked up a hamstring problem.
"The only thing which is a little bit of a shame for United so far, because I think United might have had even more points on the board, is if Pogba had been fit all the time," he told Betsafe.
"Because I thought the balance of Matic and Pogba, Herrera or Fellaini, whichever way the manager wanted to play them: Pogba was scoring goals, but he was creating goals because he had this really good understanding with Lukaku.
"So I think we’ve missed that to a certain degree and that’s why we’re not scoring as many goals as when we started the season.
"The sooner Pogba comes back the better for the club."
Robson also insisted United must try and attack Chelsea this weekend in the crunch showdown at Stamford Bridge.
"If United can dominate the midfield area where we don’t let Hazard get a lot of the ball and Pedro, then I think our centre halves can handle Morata," he added.
"If we can dominate the midfield area then we’ve got a great chance of getting a result….I’m going to go for a draw…yeah I think there could be a few goals but I think it’ll be a tied game."
Watch the betsafe.com interview with Bryan Robson, including why Mourinho is desperate to beat his former club
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