Plymouth Argyle forward Morgan Whittaker is closing in on a £6m transfer to Championship rivals Middlesbrough.
BBC Radio Tees reported on Friday, external that the 24-year-old was undergoing a medical ahead of a permanent move to The Riverside.
Sources have told BBC Sport that Plymouth have accepted a bid of £6m, with £2m worth of add-ons - a figure that would more than double the club's previous record transfer fee received.
Whittaker was a then-club record signing when he joined Argyle from Swansea City for £1m in 2023 after a successful loan spell.