The versatile midfielder has found himself filling gaps as a right wing back this season.
The 19-year old academy graduate - who's arguably the best central midfielder the club's promoted since Jermaine Jenas - has been earmarked as former captain Henri Lansbury's long-term replacement.
Under Philippe Montanier's reign, Cash's willingness to play anywhere saw him play right wing back, in a move that ultimately didn't work out.
Burton Albion's Hamza Choudhury in action with Nottingham Forest's Matthew Cash
Against Fulham, that move was resurrected with disastrous effect. The Whites constantly targeted Cash and kept putting him in two-on-one situations, pulling other Forest players out of position to try and help him in the process.
It's also led to Cash getting unfair criticism from Forest fans for something that ultimately isn't his fault, as he's out of position. One wonders what natural right wing back Hildeberto Periera - who hasn't featured since Brazil's arrival - has to do to get a game.
It is clear that if Cash is to fulfil his obvious potential, he needs more games in a position he is comfortable in.