West Ham have commenced discussions with Valencia about signing the Spanish club's 18-year-old starlet Toni Martinez.

The Daily Mail is reporting Martinez caught the attention of the Hammers with his performances in the UEFA Youth League, where he contributed three assists and a goal in eight matches.

It is understood West Ham are willing to pay a £2.4million fee for the left winger, although Valencia have asked to include a buy-back clause in the contract.

It is believed a deal is all but done, with Martinez confiding in his close friends he is set to move to London this summer.