The Arsenal forward has come in for praise from his manager.
Indeed, Sanchez could miss several games of the Premier League season due to the need to recover after the Copa America, according to Wenger.
But the Arsenal boss isn't worried.
Wenger is quoted as saying by Sky Sports: "Danny Welbeck's injury at the start of last season was a very minor one but he took much longer to settle than we expected.
"I expect him to develop as a central striker. Last year most of the time he played wide but if he adds goals to what he creates then he can be a very dangerous striker as well."
Can Welbeck finally make the transition?
Welbeck's first season at Arsenal would have pleased the 24-year-old forward on all fronts. He got Champions League football, lifted a trophy, was given plenty of game time and would likely have felt far more valued than during his time at Manchester United.
Fitness-wise, Welbeck will no doubt want an injury-free second campaign at the Emirates, while Wenger's quotes represent the very issue that will be the forward's biggest bugbear.
You wouldn't blame the Arsenal man for suffering an identity crisis, such is his desire to play up front but his tendency to always end up out wide in favour of another striker. It simply works for the Gunners and, with Olivier Giroud, Alexis Sanchez and Theo Walcott all realistically able to threaten at centre-forward, it's difficult to see Welbeck making any headway in the most advanced position on the pitch.