The forward came off the bench to net his first Clarets goal in the last minute of normal time to hand Vincent Kompany’s men their first victory of the season.
While Kompany will be delighted with the grit and determination his side showed, the win came at a cost with not one, not two, but THREE injury blows.
Vitinho and Aaron Ramsey were both able to walk off but the main concern will surround defender Hjalmar Ekdal, who held his head in his hands as he was stretchered off the pitch.
With this cup tie being the third Burnley game in the space of just six days, Kompany opted to make wholesale changes to his side – 10 in total from the weekend defeat to Aston Villa.
Dara O’Shea was the only man to retain his spot, while Arijanet Muric replaced James Trafford in goal while Jay Rodriguez came in for Sunday’s goalscorer Lyle Foster in attack.
Aaron Ramsey, Jacob Bruun Larsen and Nathan Redmond were all handed their first starts of the season, while Wilson Odobert was named on the bench for the first time.
Jordan Beyer and Michael Obafemi missed out through injury, while Darko Churlinov remains unavailable due to his summer health scare.
Anass Zaroury, meanwhile, served the second game of his three-match suspension following the straight red he was shown against Man City on the opening day.
As for Forest, Steve Cooper made seven changes to the side that squandered a two-goal lead to lose 3-2 against Manchester United on Saturday.
At Old Trafford they scored twice in the opening four minutes and they almost made a quick start on this occasion too, Cheikhou Kouyate skewing over with a rising effort and the hosts had dispossessed Burnley in their own half.
