Brentford boss Uwe Rosler has admitted hanging on to his team’s stars may be a bigger challenge than maintaining a promotion challenge.

Clayton Donaldson and Harry Forrester scored the goals in a first half performance that left the Bees chief speechless and secured a 2-0 triumph of Sheffield United at Griffin Park on Saturday.

The stretched Brentford’s current run of good form to only one defeat in 14 league matches as they have climbed in to the League One top six.

Rosler has raided the loan market in recent weeks and saw Fulham 19-year-old Marcello Trotta impress up front and Wigan Athletic man Rob Kiernan doing the same for the Bees.

Forrester has blossomed this term, while other youngsters – including star goalkeeper Simon Moore – will no doubt be attracting admiring glances with the January transfer window looming.

And Rosler admitted that could pose a problem.

“That was the best week since I’ve been in charge at Brentford,” he said as his side prepare to face visit Bradford City in the FA Cup second round.

“The way we played in the first half was unbelievable. With a team with the youngest average age in the league at 22.5 and the way we played against the best team, for periods in the game I was speechless.

“For me it is important to keep our best players and that will be a challenge. I’m so proud to be the manager. Hopefully we will find ways to keep this squad together.

“Rob Kiernan had never played at this level or in that position before. Young Marcello, who has only been playing in development squad football at Fulham, has proved he can play at that level. He did exceptionally well on Saturday.

“Harry Forrester was rested today and I told him to come out and inject energy and get the crowd going and that is what he did. Harry got a bit tired in the second half, but he is putting on the table what we know he can.”