Stats published by talkSPORT show that Arsenal have scored just nine goals but conceded 10 when Torreira has not been on the pitch for the Gunners this season. Drives the team forward and passes at the right time to the right player.
Ramsey, whose deal expires at the end of the season, is free to negotiate with overseas teams from January 1.
Unai Emery sees Ramsey as surplus to requirements, but the likes of Chelsea, Manchester United and Liverpool are eager to poach the Welshman. "We have worked and knew we could go forward so everything is better now".
Ramsey also provided a superb through ball to set up Aubameyang's second - and Arsenal's fifth.
Both stars became the first two substitutes in the Premier League to score and assist a goal in a single game.
The 27-year-old is unlikely to be short of suitors if he does indeed leave the club on a free transfer next year having given a timely reminder of his abilities at Fulham yesterday as he made a starring appearance from the bench.
Summer signing Sokratis and German centre-back Shkodran Mustafi have been the preferred partnership in central defence for the Gunners this season but Merson is not convinced the pair have what it takes to keep Arsenal's good form going. "And whether you are expected to win or not, you still have to do so". "It is very hard but we must prepare, continue improving and show big commitment", said Emery.
In fact, only defending Premier League champions Manchester City have scored more goals than Arsenal's tally of 19 in the top flight this term.
Arsenal return to action against Leicester after the global break.
City's normal penalty taker, Sergio Aguero, had already been substituted when Virgil van Dyke clattered into Leroy Sane in what the defender later admitted was "not a smart move".
"Riyad feels deflated, he feels he has let us down", he said.
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