George Saville and Marcello Trotta will stay with Brentford for the rest of the 2013/14 season after their loan deals were extended.
The pair have played a key role in Brentford climbing to the top of Sky Bet League One since arriving from Chelsea and Fulham respectively.
Agreement has been reached for them to stay with The Bees until May 4, plus the League One Play-Offs if required, and the paperwork was completed this morning.
George, 20, has played 24 games for Brentford this season after signing from Chelsea, 21 of them from the start.
He has played 20 League One games, starting 17 of them, and scored both his Brentford goals in league matches.
Marcello, 21, has made 20 Brentford appearances this season, 16 of which have been starts, and scored seven goals.
He has played 17 League One games for The Bees this season, 13 of them from the start, and scored six goals.
Mark Warburton, Brentford FC Manager, said: “I am delighted to have George and Marcello commit for the rest of the season.
“They have made an excellent contribution to the season so far.
“I have every confidence that they will continue to have a very strong influence in future games.
Thanks to Chelsea and Fulham for their co-operation and we look forward to seeing them develop in the months ahead. “
George Saville joined The Bees on loan from Chelsea before the start of the 2013/14 season and made his debut on the first day of the campaign against Port Vale.
He turned professional in 2010 and had a spell on loan at Millwall last season.
He played for Chelsea’s Under-21 side in the Barclays Under-21 Premier League last season and also for The Blues in the NextGen Series, the Under-19 tournament for the Academy teams at some of Europe’s top clubs.
George joined Chelsea from Reading when he was an Under-13.
Marcello is in his second spell at Griffin Park, having spent six months with The Bees last season.
He played a key role in Brentford’s push for automatic promotion in 2012/13, scoring six goals in 22 League One appearances, six of which were as a substitute.
In total he scored nine goals in 29 games for The Bees last season and ended the campaign as third top scorer.
Marcello has now played 49 games for Brentford, 35 from the start and scored 16 goals.
In league football that record is 12 goals in 39 games, 29 of which have been starts.
Marcello, who is part of the Italy Under-21 set-up, joined Fulham as a 16-year-old in 2009 having been on the books of Napoli and Manchester City as a youngster.
He turned professional in the summer of 2011 and joined Wycombe Wanderers on loan later that year.
He scored eight goals in eight games for The Chairboys and earned a Fulham debut after returning to Craven Cottage.
Marcello, who has also been on loan at Watford and played for Italy at Under-19 level, has made three substitute appearances for Fulham.