The Canaries fan favourite has lost his place in Daniel Farke's Championship high-flyers this season.
Norwich City and Sheffield United have secured promotion to the Premier League.
The Canaries and the Whites are flying high in the Championship under Daniel Farke and Marcelo Bielsa respectively.
The Canaries ace is banned for three games following his red card in the Carrow Road club's last Championship game.
Leeds United, Sheffield United and Norwich City are all vying for promotion via the automatic places.
Millwall boss Neil Harris has praised Norwich City counterpart Daniel Farke.
Norwich City will face Middlesbrough, Queens Park Rangers and Reading in their next three games.
The Canaries top the Championship and look likely to be in the Premier League next season.
Masouras only joined Olympiakos from Greek Superleague rivals Panionios in January and he could join Premier League-bound Norwich City.
The Canaries play Rotherham in the Championship on Saturday after Elland Road plays host to the Whites and the Blades.
Gary Neville has hailed Leicester City defender Harry Maguire.
West Ham United boss Manuel Pellegrini is looking to make plenty of additions at the London Stadium this summer.
Tottenham Hotspur's pursuit of Tanguy Ndombele has taken a hit.
Former Arsenal midfielder Ismael Bennacer is reportedly in talks to join Genoa from Empoli but the Gunners could have a say in the transfer.
Tottenham Hotspur are yet to agree a fee for Tanguy Ndombele.
Tottenham Hotspur have been linked with some very exciting talents this summer already, although Mauricio Pochettino's men are yet to complete a signing.
On their way to making a return to the Premier League, Aston Villa beat West Bromwich Albion in the play-off semi-finals.
Tottenham Hotspur defender Toby Alderweireld faces a very uncertain future at White Hart Lane.
Aston Villa are chasing Southampton's Matt Targett.
Leeds are chasing Liverpool youngster.