Keane Lewis-Potter is leaving Hull City's pre-season tour in Turkey to finalise a £20million move to Brentford.
The England under-21 international has been on Brentford's radar for the past year and they failed in their attempts to land him in January.
But the Bees returned with a sizeable offer, believed to include an initial fee in the region of £16million, that the Championship club deemed acceptable.
Lewis-Potter is boarding a plane from Istanbul, where Hull lost to Fenerbahce on Sunday, and heading to complete a step up into the Premier League.