Indeed, it'd have taken an almost stupidly brave observer to bet against the Portuguese scoring goals given the stunning record he's built up over the course of his career, although the doubt as to whether or not he was the right signing for the club is slightly more nuanced.
There, of course, is no suggestion that the 36-year-old will let up in front of goal but the manner of United's loss to Aston Villa at Old Trafford would suggest that perhaps they needed something else.
Clearly, United's home form was a problem last season, to suggest Ronaldo's presence played a part would be too much. Still, the way in which the home side performed - struggling to create much in the way of anything meaningful and losing the midfield battle - could well be seen as a failure to address what they needed in the summer transfer window.
Wherever you stand on the great Ronaldo return debate, however, it's easy to see why he was frustrated after the game.
Considering Ole Gunnar Solskjaer's side have been reliant on moments of individual brilliance, it makes the moments when key players fail to shine all the more gutting.
Fernandes, who had never failed to miss the target from the spot in his senior career, could not convert in an ironic turn of events after Solskjaer had suggested his side were being ignored penalties only a day before.
Venting his own frustration, Ronaldo - a man who seems to thrive in such high pressure situations - reportedly (via the BBC's Simon Stone on Twitter) punched the corner flag as the sides left the pitch, condemning United to their second home loss in a week.
A day to forget for all involved.News Now - Sport News