Romelu Lukaku is reportedly eyeing up a move away from Manchester United after becoming the latest player to have grown unhappy under Jose Mourinho.

The Belgian striker has been left out of the Red Devils' starting lineup for a couple of key games in recent weeks, including the 2-2 draw with Arsenal on Wednesday night.

According to The Sun, the 25-year-old has joined fellow big-name recruits Paul Pogba and Alexis Sanchez in becoming frustrated.

Lukaku has scored five goals in 18 Premier League and Champions League matches this term, leading to concerns from under-fire boss Mourinho.

Anthony Martial and Marcus Rashford have been used in tandem up top in two of United's last three matches, but Lukaku - described as "not good enough" by Paul Ince - is in line to return against Fulham on Saturday.