Berahino served an eight-week suspension earlier this season after failing a drugs test, which he has now said was due to his drink being spiked in a nightclub.
The 23-year-old did not play for West Brom between September and January, when he joined Stoke at the end of the transfer window for a deal worth £15million.
In an interview with BBC Football Focus, Berahino also said "no-one protected me" at Albion, that he had become depressed and ended up hating being at the club he joined as an 11-year-old.
When asked about Berahino's comments, Pulis told a press conference: "'If Saido has an opinion Saido is entitled to that opinion."
Source : PA
Source: PA