Manchester United, Chelsea and Manchester City are keen on completing a deal for Jamie Vardy in January, with the England international scoring 15 goals and breaking several records. The Leicester City striker turns 29 this year and may look at it as his last opportunity to move into a top four club and expand his earnings, as he enters his final few years in top-flight football.

Sky Sports reports that all three clubs are willing to pay top bucks to secure his services. United and Chelsea are particularly keen, having found goals hard to come by this season.

Louis van Gaal is looking to add some much-needed pace and creativity in the squad to aid his attack. New Chelsea manager Guus Hiddink has earmarked Vardy to play alongside Diego Costa, ahead of the misfiring Loic Remy and a perennially injured Radamel Falcao.

Vardy has two and a half years left on his current contract, earning £40,000 ($58,518) a week. This should increase significantly if he decides to make a move in January. However, Leicester are desperate to hold on to their top star and are pondering offering him an enhanced contract to fend off interest from the big boys in the Premier League.

Manager Claudio Ranieri has insisted that neither Vardy nor Riyad Mahrez are for sale in the current transfer window, as the Foxes look to translate their brilliant run of form in the first half to at least a top four spot. In last year's top four, the 28-year-old scored against every opposition barring Manchester City, showcasing his big-game mentality.

United are also keeping an eye on Southampton forward Sadio Mane, who has fallen out with manager Ronald Koeman over disciplinary issues. Felipe Anderson is another player whose name has been doing the rounds in the rumour mills, but no official bid has been made for the Brazilian.