This summer is set to be a busy one for Manchester United. With Jose Mourinho expected to make some big changes, it's fair to say that there will be a few transfer column inches devoted to in comings and goings at Old Trafford.

Mourinho has performed well in his first season with the club, but he is all too aware of the areas that will need strengthening and rebuilding by the time the summer rolls around.

One of those areas that needs attention is the attack. With Wayne Rooney struggling to score on a regular basis and an off-form Anthony Martial backing up Zlatan Ibrahimovic, Mourinho is looking for a a top class forward to feature alongside Marcus Rashford.

There has already been several names mooted over a possible move, with Atletico Madrid's Antoine Griezmann and Everton striker Romelu Lukaku emerging as the favourites to make the move to Manchester.

However, the Red Devils would seemingly have competition for Lukaku's services, as his former club Chelsea are also rumoured to be keen on taking him away from Goodison Park.

The Belgian international has been in terrific form again this season, banging in 25 goals in a total of 36 games across all competitions.

But the 23-year-old was unable to give his old club much trouble on Sunday as Chelsea came away from Everton with a 3-0 win.

And his disappointing performance came as little surprise to former Red Devils star Gary Neville, who highlighted that this is a continuing trend of the 23-year-old being unable to score against teams in the top six.

“The question mark and frustration with Lukaku is does he do it in the big games?" he told the Sky Sports podcast (via The Sun).

“That won’t go away until he moves to a big club and starts delivering.”

Despite his inability to score against the top six this term he still managed to earn himself in the PFA Team of the Year.

And a move is more than likely after Everton's very public failure to tie him down to a new deal.