The Jamaican international is understood to be interesting the Elland Road club as Gary McAllister prepares to begin his close-season recruitment in earnest.

But the South Yorkshire club would look to recoup a sizeable portion of the £1.85m fee they paid to Swedish club Helsingborgs for his services last year.

The 22-year-old was signed in January 2007 by former Blades manager Neil Warnock, but has started just seven league matches since and featured on only three occasions under current boss Kevin Blackwell.

The ex-Leeds manager has a number of experienced strikers available to him, including James Beattie and Rob Hulse, and Shelton may find his opportunities limited again.

Shelton has two years remaining on his contract and the talented youngster is believed to be interesting a number of other clubs.

His tally of nine goals in 19 appearances for Helsingborgs prompted his move, but Leeds would have to secure a work permit for the forward if they sign him on a permanent basis.

McAllister's only signing to date has been Andy Robinson on a free transfer from League One champions Swansea City, but a number of other new arrivals are expected to follow. Leeds have already been linked with strikers Kevin Phillips, Derek Riordan and Andy Cole.

Shelton struck twice in Jamaica's 7-0 victory over the Bahamas in a World Cup qualifier on Sunday and he has scored four goals in 10 starts for Sheffield United.

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