I’m not quite sure what you are saying here. If Pep had said something to Yaya which was racist/discriminatory then of course he should speak out - his recollection of events would be sufficient - he doesn’t need a tape recording. However, from what’s been released so far, he seems to be saying Pep is too clever to have done anything he can actually say is racist, so he can’t point to any racist behaviour. His entire position seems to be based on a position that Pep must be racist as he wasn’t picking Yaya. Does anyone, other than Yaya and his agent, genuinely believe that there is no other explanation for Pep not picking him? Couple that with the fact we know Pep can be a bit of a prat towards players he wants rid of (African or otherwise) and it doesn’t feel as though there is much basis for Yaya’s damaging accusations.
In addition, if he genuinely felt Pep had behaved in a discriminatory way towards him, I would have expected him to have used the club’s grievance procedure whilst he was still there. That would be the correct way to deal with the situation and bring a ET claim if necessary. There is no current suggestion that he did so. Instead, he’s waited until after he left the club and then stained Guardiola’s name.
My strong feeling from what we’ve heard so far (and what we know about Toure’s prior behaviour) is that it’s more likely than not that he’s going to have nothing to back up his statements. If that’s the case, then that can only be harmful to those who do have genuine grounds to complain and I hope he’s dealt with accordingly.