The 21-year-old livewire has returned to his parent club Benfica following a season long loan with Forest.
The Swiss international never won over the fans at the City Ground.
These five players haven't made life any easier for Reds fans this season.
The Serie A side have been tipped to make a move for Pajtim Kasami and now his teammate is reportedly on their radar too.
Nottingham Forest loanee is owned by Olympiakos.
Nottingham Forest manager Philippe Montanier is likely to keep faith with a back three for the Championship encounter with Queens Park Rangers this weekend.
The Swiss internationals comments should worry Forest fans.
Nottingham Forest travel to Reading with major first team absences ahead of this Championship clash. We preview manager Philippe Montanier's expected XI.
We preview Nottingham Forest's Football League Championship clash with Birmingham City by examining the home side's potential starting line-up.
Nottingham Forest won against Norwich City in the Championship on Saturday.