Chelsea are reportedly ready to sell Romelu Lukaku if any club meets his £35m valuation.
The Blues signed the striker from Anderlecht in summer 2011 after paying around £20m earmarking him as Didier Drogba's long-term replacement.
However, after making just eight Premier League appearances in his debut season at Stamford Bridge he has spent the last two seasons on loan at West Bromwich Albion and Everton.
But even though he has excelled during both spells recent reports claimed that manager Jose Mourinho still questions his ability to replicate that form at Stamford Bridge.
Daily Mail reports that eventually the Chelsea boss will put him on the market for £35m.
According to report, Tottenham was leading the race to secure his services as they have more financial muscle than Everton - while Atletico Madrid, Borussia Dortmund and Bayer Leverkusen are also monitoring the situation.
Mourinho recently denied getting any offers for Lukaku whilst also refusing to confirm he has a future in west London.
"Have we had any approaches? No. I don't think it's the time to speak about it. 'He's a Chelsea player, but at the same time he's an Everton player until the end of the season. We want to respect that. Everton are good club for a loan. Our player is there and our player is playing," the Chelsea boss said.
Meanwhile, Lukaku recently explained his decision to leave Stamford Bridge last summer but rubbished rumours saying that he had an argument with Mourinho after he missed a crucial penalty in a shoot-out loss to Bayern Munich in August's UEFA Super Cup.
"Ha! People said there were arguments. There were arguments in the press and stuff, but I don't know where it came from. I just spoke to him and said hopefully what I wanted as a player and he was okay with it.
"Then I had the opportunity to go. The feeling I had after three games at Chelsea, I was really hoping for a starting spot, because of the season before when I had scored goals. But it's a big club, there is real competition, and they said there was a feeling I had to stay patient again.
"And the feeling that I had from my first year came up again, and I knew I had to go. Because how you could be on the bench after the year I had last year? Because I still want to progress. I don't want to be a one-season show."