Manchester City travel to east London, with a tough task against Slaven Bilic's West Ham side. The biggest threat that the sky Blues will face, is French international, Dimitri Payet. The 28-year-old is the Hammers' star man, and since arriving from Marseille last summer, the attacking midfielder has acclimatised to the rigours of Premier League football perfectly - cementing his place in the first-team perfectly as one of their most important players.
He's both a provider and a scorer of goals, with six goals and four assists to his name in the English top flight this campaign - despite an anterior cruciate ligament tear left him sidelined for two months.
What are Payet's strengths?
He is at his best playing just behind the striker, a number ten role if you will. His ability to strike the ball from range accurately, whether that's from open play or a set-piece, is something that Joe Hart will be justifiably weary of. He's also an excellent passer of the ball too, and can play it long or short to teammates in space - so Nicolas Otámendi and Martin Demichelis will have their hands full having to deal with him.
Michail Antonio
Since making his move from Championship outfit Nottingham Forest, Antonio has had a slow start to his West Ham career - only making his first appearance in late November at home to West Bromwich Albion, since then he's made ten appearances in the Premier League scoring twice and assisting once.
So with limited appearances this season, why is he a threat? Best deployed on either flank, Antonio boasts electric pace as well as exceptional strength you typically wouldn't expect from a winger - meaning not only can he give the fullbacks a nightmare, he can trouble the centre-backs too, something that became all too apparent when Liverpool visited them at the start of the new year. One can only hope that the experience of the City backline will make up for the lack of raw pace.
So there are West Ham's two most prominent threats tomorrow, two very skilled players that shouldn't be underestimated by any means. The sky Blues will be in high spirits after last week's 4-0 thrashing over Crystal Palace but their away form this season has been underwhelming to say the least. A masterclass from either side could be the only way there is to separate the two sides come tomorrow evening.