Pulis was sacked as Baggies manager yesterday morning.
The Mirror says two West Brom players are said to have chanted for Pulis to be sacked after the defeat.
Pulis was fired on Monday with his side sat 17th in the Prem and just a point above the drop zone.
A pair of players were spotted by fans joining in with chants for Pulis to go from a box in the East Stand.
Worse still was when the Baggies fans, who had not already walked out, joined in.