The 29-year-old former Manchester United and Real Madrid player, known as 'Chicharito', is expected to arrive in London in the next few days for a medical and to finalise personal terms on a transfer British media are reporting to be worth 16 million pounds.
Hernandez joined Manchester United from Chivas in 2010 and scored 59 goals in 156 appearances, as well as having a loan spell at Madrid, before joining Leverkusen in August 2015.
In Germany, he netted 39 times in 76 matches, and he is also Mexico's all-time leading goalscorer, after he scored his 47th international goal on his 91st appearance, against Croatia in May.
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($1 = 0.7710 pounds)
(Reporting by Julian Shea; Editing by Toby Davis)
