Oxford United's exciting young star, Dexter Blackstock, today joined Premiership club Southampton.

The 17-year-old striker has joined the Saints in a deal that could eventually be worth £600,000 to United if he goes on to fulfil his outstanding potential.

It's understood the initial down-payment could be around £175,000.

Both clubs are saying the move is for "an undisclosed sum".

Blackstock, who last week hit all five goals as United's Under 19s won 5-1 at Cheltenham and then struck twice for the reserves in their 3-0 win over Plymouth Argyle Res, has been watched by a posse of scouts.

Southampton's head of recruitment, Malcolm Elias, the former youth development officer at Oxford, has been a regular watcher and has seen the rapid progress the player has made.

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