Palace’s 1-0 defeat to Brighton on Wednesday means the club has just one triumph in its last 14 Premier league matches and has not won a league match in 2023.
The club is just three points above the relegation zone and travels to play league leaders Arsenal on Sunday.
“It is with enormous regret that this difficult decision has been made. Ultimately, results in recent months have placed us in a precarious league position and we felt a change is necessary to give us the best chance of retaining Premier League status,” commented the club’s chairman Steve Parish on its website.
Viera was in his second season at the club, after a successful first campaign in which he led them to 12th in the Premier League and to the semifinals of the FA Cup, while changing their style of play from the defensive game they had played under Roy Hodgson to a more attractive passing game.
“Patrick’s impact since joining us in the summer of 2021 has been significant, and he is held in the highest regard by myself and all of his colleagues,” commented Parish, thanking him for the “exciting football” he had brought to the club.