Romelu Lukaku is wanted by Zenit St Petersburg.
Chelsea paid big to lure the Belgian international striker to Stamford Bridge in the summer, as they beat off competition for a number of clubs for his signature.
Lukaku has barely featured for the UEFA Champions League finalists this season, though, and he is expected to be loaned out when the window reopens.
Reports in Russia, though, claim Zenit want the 18-year-old forward on a permanent basis, and could look to persuade the Blues to sell for around £13million.
Get all the latest news on your club. Visit 360 Football, the best football news aggregator on the web!