Was speaking to a mate who's an Albion fan and he was more pissed off with Spurs and Levy than Berahino.
According to him, Berahino wanted out last season but stayed with the promise that he could leave, for a reasonable price, for a team playing in Europe.
The problem arrived with Levy trying to get him on the cheap. Obviously Spurs are a team playing in Europe and according to reports, were offering £20+ million for him. However, as Peace pointed out, it was a stupid bid with loads of instalments.
Therefore, Berahino feels like the chairman has broken his promise, whilst Peace will maintain he didn't receive a suitable price.
Personally, I wouldn't be surprized to see Berahino stay this season and move to a bigger club than Spurs, someone like West Ham or Watford, next year.