Lyon manager Hubert Fournier says Tottenham' Hotspur's bid for Clinton Njie was too good to turn down, but has warned the player still has "significant room for growth".

Njie, 19, is poised to become Tottenham's fourth signing of the summer after Lyon president Jean Michel-Aulas confirmed to RMC Sport the club were "close to an agreement" with Mauricio Pochettino's side.

The Daily Telegraph claims Tottenham have made an offer of an initial £10m ($15.6m) with another £2m to follow in add-ons.

Njie scored eight goals for the Ligue 1 side last season but was not a regular starter in what was his first season in the senior squad.

Fournier has mixed feelings over his departure, feeling the forward could stand to remain at the club to improve further, although he understands Lyon are in a position where they must listen to offers.

"It is well-advanced," Fournier told a press conference when asked of Njie's move to White Hart Lane, Foot Mercato reports. "There sums that are involved are considerable for a young player like Clinton. It is a mixture of satisfaction and disappointment to lose a player who still has significant room for growth. Ideally, one would like to always keep our good players. But we must adapt. There is an economic reality that affects 19 clubs in France, there is only one who does not have these problems."

Tottenham have already made three signings this summer, strengthening their defensive options with Toby Alderweireld, Kevin Wimmer and Kieran Trippier. The club are however expected to bring in further reinforcements in attack with to ease the burden left on Harry Kane.

Roberto Soldado appears close to ending his two-year spell at White Hart Lane. His Tottenham teammate Erik Lamela tweeted a goodbye message to the Spain international on Thursday morning (13 August), only to swiftly delete the tweet moments later.