Sessegnon, also a target for Liverpool until it became clear he wasn't particularly interested in joining the Reds this summer, only celebrated his 17th birthday in May and it wasn't until then that he actually signed his first professional contract with Fulham.
However, that didn't deter Tottenham as the Mirror reported last week that the north Londoners had tested Fulham's resolve by submitting an opening £25m offer for Sessegnon services.
Although nothing is concrete at present - this is a story that is sure to develop further in the coming days as the transfer window closes in just over a week's time.
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Mauricio Pochettino is expected to be extremely active during the closing stages of the transfer window and Sessegnon could be viewed as a long-term replacement for Danny Rose after he cast doubt over his future at White Hart Lane recently. The England youth global made a major impression in his first professional season last campaign - scoring 5 times down the left-side in 26 appearances for the London club.
Sky Sports has also said that Man United have "significant interest" in the player and would loan him straight back to the Championship club if they were successful.
Sky Sources understand that Mourinho is a keen admirer of the left-sided attack minded full back.
Nonetheless, Fulham owner Shahid Khan remains adamant to keep Sessegnon at any cost and isn't prepared to sell the club's young star, even at a price of £25million.