MAGAYE Gueye was on target as Millwall U21s recorded a 2-0 win over Welling United.
Gueye was given a 60-minute run-out at Park View Road on Tuesday evening to help boost his fitness levels ahead of the new season.
The 24-year-old opened the scoring with a low angled drive before Aiden O'Brien doubled the visitors' advantage shortly before half time.
U21s boss Neil Harris fielded three young trialists in the game who are hoping to join the club's development squad next season.
Harris' side have not lost a friendly this summer.