Adrian Forbes has agreed to return to Grimsby and is set to sign a two-year contract with the League Two club.
The Millwall striker spent the final few months of the previous campaign on loan at Blundell Park.
The 30-year-old bagged three goals in his 15 appearances for Mike Newell's side as they clambered away from the relegation trapdoor.
The former Norwich trainee is now poised to complete his move to Blundell Park later this week.
Forbes' spectacular overhead kick in the 3-3 draw at Barnet was voted Grimsby's goal of the season.