Heavy transfer speculation mounts around the 27-year-old Welshman as his current contract atEmirates is set to expire at the end of may and moreover, latest reports by the host of publications stated Gunners have refused to offer the midfielder new deal and eventually his contract talks broke down.
Aubameyang replaced Welbeck in the second half and the Gabon global netted two quick-fire goals to help the Gunners record their biggest win under Emery so far.
Aubameyang's arrival cast doubt on Lacazette's future at the club but the pair have clicked on and off the pitch, mustering 11 goals between them this season.
Arsenal return to action against Leicester after the worldwide break.
"We have to keep quiet and work like we did before and the season is going well".
Earlier this month, Ramsey's representatives Avid Sports & Entertainment Group confirmed he is likely to depart as a free agent at the end of the season after the club chose not to continue discussions over a new contract.
"It is good", Lacazette said of his relationship with Gabon global Aubameyang. "And whether you are expected to win or not, you still have to do so".
"It is hard to compare with Thierry because he came was younger and Auba is at the top of his career", Lacazette told the Daily Express. "It is very hard but we must prepare, continue improving and show big commitment", said Emery.