The Toffees swooped to sign Lukaku on a permanent basis from Chelsea back in the summer of 2014, having hit 16 goals during a superb loan spell.
Despite hitting 20 goals last season, many people had begun to doubt the Belgian, stating that he was inconsistent and not physical enough, despite his giant frame.
This term though, Lukaku has hit back in style, hammering 19 goals in 27 games, establishing himself as arguably the finest centre forward in the Premier League.
Unsurprisingly, the 22-year-old's exploits in front of goal appear to have triggered interest in his signature, with The Sun reporting that Chelsea, Manchester City, Paris Saint-Germain and Real Madrid are all keen on Lukaku, whilst it's also suggested that Manchester United have been monitoring his progress throughout the season.
The report claims that Everton have set a whopping price tag on Lukaku's head, as the Toffees would want £65m to part with the former Anderlecht wonderkid.
Everton will hope that such a huge fee is enough to put any interested teams off a move for Lukaku as they look to keep their top young talents, but given that he's already becoming a complete forward at the age of just 22, some clubs may see £65m as a fair price in the current market - particularly Manchester United, who have shown in recent transfer windows that money is no issue at Old Trafford.