Brentford striker Marcus Forss is finalising personal terms with Middlesbrough ahead of a move up north.
The Finland star is set for a permanent transfer to the Championship club.
Forss, 23, made seven appearances for the Bees in the Premier League last season without scoring.
However, he finished the campaign with six goals in 12 games for Thomas Frank's men after netting five goals in four games in the League Cup, including four in one game against Oldham.
On transfer deadline day in January, he moved to second-tier Hull City on loan, scoring once in 11 appearances.
But in the two seasons before last, 14-cap international Forss scored 11 in 18 games on loan at League One AFC Wimbledon before bagging 10 in 50 games in all competitions to help Brentford get promoted, including a play-off semi-final goal.
Ambitious Boro manager Chris Wilder is looking to reinvest the money from the £20million sale of defender Djed Spence to Tottenham.
Middlesbrough have already signed defender Darragh Lenihan and goalkeeper Liam Roberts on free transfers, plus Manchester City's Zack Steffen and Wolves defender Ryan Giles on loan deals.
Forss, the son of former footballer Tero and grandson of ex-Finland international Rainer, will compete with Duncan Watmore, Josh Coburn, Uche Ikpeazu and Chuba Akpom for a place up front.