If Moyes was hoping the international break would give his new striker a boost and some much-needed game time as West Ham approach a crucial and jam-packed October, then he will be left disappointed.
When West Ham spent £170m on eight new players in the summer it is fair to say the £35m splashed on Scamacca captured the imagination more than most.
That’s understandable given West Ham fans had been waiting 18 long months for Moyes to sign a striker.
It has been a slow burn for Scamacca at West Ham in terms of the Premier League so far, though.
Despite three goals in four Europa Conference League games – including an absolute humdinger in the recent 3-2 win at Silkeborg – Moyes is electing to drip-feed the forward into the rough and tumble of the Premier League.
It is a decision that has infuriated West Ham fans who are seeing other strikers and signings being thrown straight into the action at rival clubs with great success.
One of the reasons West Ham were so excited to get Scamacca was because he had been dubbed Italy’s big new striker hope.
Italian media has long championed the new West Ham man as the forward the Azzurri’s attack will be built around.
But after being substituted early in the second half in the win over England, Mancini has revealed he will now be building his team around Scamacca’s former strike partner Giacomo Raspadori instead.
And he did just that for Italy’s crunch Nations League win over Hungary on Monday night as he dropped Scamacca in his only change from the win over England.
Italy boss Roberto Mancini aims clear dig at David Moyes over his use of striker Gianluca Scamacca at West Ham
Hammers striker Scamacca played just 18 minutes at the end of the game – a period Mancini said afterwards was Italy’s worst of the match.
It comes as Italy boss Mancini has aimed a clear dig at Moyes over his use of striker Scamacca at West Ham.
Mancini was asked the reasoning behind his solitary change to drop Scamacca for the important Hungary clash, which was the group decider (Football Italia).
And the ex Man City manager said his hand has been forced because of Scamacca’s lack of game time at West Ham.
“Italy have a problem right now, which is that there are very few Italian (strikers) getting regular playing time at club level,” Mancini said when asked why he dropped Scamacca (Football Italia).
“My job is to find a solution, and that includes finding younger players like (Scamacca’s replacement Wilfried) Gnonto.
“There are talents of that age, they just need the opportunity to play and gain experience.”
All eyes now turn to West Ham’s absolutely huge home game against Wolves on Saturday and whether Moyes will give Scamacca a starting spot.