The Hammers are looking for a new boss following their decision to part ways with Sam Allardyce, and they have drawn up an ambitious list of potential targets.
West Ham want to break into the European spots as they prepare to move into the Olympic Stadium and are reported to be interested in a number of top coaches from across the continent.
The likes of Rafael Benitez and Marcelo Bielsa are said to be on West Ham's wishlist, but Emery is now believed to be their main target.
Emery's demanding style, which has been successful at both Valencia and Sevilla, has impressed the Hammers' hierarchy and they are prepared to make a move in the near future for the Spaniard.
Sevilla are understandably reluctant to see him go and they will demand £1 million in compensation, but West Ham are willing to meet those demands.
The Hammers don't mind spending big on a new manager if they feel he is the right choice, and David Gold and David Sullivan are both reportedly fans of Emery.
Persuading Emery to move to the Boleyn Ground could be tough, though, as he has just guided Sevilla into the Champions League after they won the Europa League last night.