The 53-year-old offloaded Lukaku to Everton for £23m back in 2013, making it clear that Belgian was not good enough to feature for Chelsea on a regular basis.
Man United’s interest in Coleman dates back to the David Moyes era, with the Irishman ultimately deciding to remain at Goodison Park.
Nonetheless, club officials were present for Everton’s 1-1 draw with Crystal Palace last month to see the pair in action.
Mourinho’s interest in Lukaku resembles something of a sharp U-turn: the Portuguese, back in 2013, made it clear that Lukaku, a highly rated youngster at the time, wasn’t good enough to play at a top club.
Since then, the Belgian has made an emphatic surge towards international stardom. While his link-up play, first touch and positional knowhow continues to come under question, Lukaku’s goal-scoring record speaks for itself: he has clocked up more club goals before reaching the age of 23 than Michael Owen, Cristiano Ronaldo, Fernando Torres and Luis Suarez. And with Wayne Rooney now entering the closing stages of his career, moving for Lukaku seems like a smart move.
Likewise with Coleman – a consistent, energetic right-back with high levels of Premier League experience. With Matteo Darmian reportedly unhappy at Old Trafford, the Irishman would be a fitting replacement.