One West Ham player is in relaxed mood ahead of the massive clash with Spurs.
The clash could also have major implications on the Hammers' hopes of securing European football, with three points potentially being enough to see them move level with fourth-placed Manchester City tomorrow.
Despite the pressure surrounding the occasion, one West Ham player is certainly in relaxed mood ahead of the London derby.
The 25-year-old put his team-mate on blast by posting a picture of his bizarre luminous trainers, accompanied by the caption '#whatarethose'.
Get your sunglasses out and view the snap below.
We don't quite know what they are, or which nuclear power plant Mr Kouyate found them in, but we reckon the 26-year-old should discard them.