The Belgian forward is desperate to move back to Inter Milan, having struggled in his first season since his massive £97.5million move to Chelsea.
There are also lingering concerns over his suitability to the way Thomas Tuchel likes his team to press and hold the line in games.
Lukaku still owns a house in Italy and there are reports that he has been in contact with his teammates from the Championship-winning campaign at Inter Milan.
And now Mikel has suggested that he understands why the forward wants to return to the continent.
The Nigerian legend claimed that it’s easier to score in Italy, where the standard of play is lower compared to the rigours of the Premier League.
Mikel was speaking to a Nigerian Radio station called Naija FM and said: “‘The English league is totally different, too strong, too powerful.
“The Italian league is too slow. The pace of English football is way too much for the Italian league.”
Check out the latest Premier League transfer speculation below...
1. Boro plot Fredericks swoop
Middlesbrough are plotting a move for the exit-bound West Ham right-back Ryan Fredericks this summer. (Daily Mail)
2. Blues keen on Ait-Nouri
Chelsea have turned their attention to signing Wolves defender Rayan Ait-Nouri. (Alan Nixon)
3. Toon ease up on Harrison interest
Newcastle United have been priced out of a £30m move for Leeds United winger Jack Harrison. (Telegraph)
4. Albion eye Ilic
Brighton are in the race for Hellas Verona midfielder Ivan Ilic, who could cost around £21.5m. (Area Napoli)