Arsenal legend Ian Wright is disappointed by Olivier Giroud's expected departure today.
Aubameyang, 28, is in London and will have a medical on Wednesday to complete his £60m deal and sign a £180,000–week contract.
"Why would they sell him? It doesn't make sense," he said on BBC Radio 5 live.
"It really would be like lose a tenner, find a fiver.
"So we've got Lacazette and fingers crossed Aubameyang and no big guy on the bench.
"You are talking about bringing on Danny Welbeck, or if Lacazette's not playing then him.
"We haven't got that guy that's proven off the bench to come on and score goals."