West Ham have had a bid worth up to £3m for striker Nikica Jelavic accepted by Championship side Hull City.
The Croatia international is in London for a medical with the Premier League club.
He scored 13 goals in 50 appearances for the Tigers, who were relegated from the top flight last season.
The move would see Jelavic, 30, reunited with Hammers boss Slaven Bilic, who was Croatia manager from 2006 until 2012.
Former Rangers striker Jelavic joined Hull City from Everton in January 2014.