Joe Allen clause interests Tottenham Hotspur?

Tottenham Hotspur are said to be tracking the progress of Joe Allen's potential move from Swansea City to Liverpool.

Allen has been heavily linked with a move to Anfield this summer, but the Reds have yet to meet Swansea's valuation for the 22-year-old Wales international.

The player's contract, which expires in June 2015, contains a minimum fee release clause of £15m that applies solely to Liverpool, Manchester United, Manchester City, Arsenal and Chelsea.

According to The Mirror, Spurs have become interested in Allen after discovering that his contract has a second clause in it which states that the Swans must accept offers of £12m and above from any team outside of England's 'big five'.

It is believed that Andre Villas-Boas will step up his interest in Allen if he fails to land reported top transfer target Moussa Dembele.