According to 'Sky Sports', the player is currently in London for talks with the Premier League side.
The 25-year-old has been at Lorient for the past two years and it is believed the club are holding out for £12m for the Ghanaian international.
The striker from the Ligue 2 club has already been the subject of interest from Premier League side Burnley but it is understood their bid of £9m was rejected.
Waris has previously played for Spartak Moscow and Trabzonspor and can play either as a striker or winger.