My honest opinion about Ollie is that 29 years old, scored 15 goals last season, and finished at 7th as top scorer. He's still worthy as a striker, but don't like his release clause, which is £60m. If his price can be reduced like £45m, it's worthy.
Watkins' current market value is around 34.5 million pounds. That release clause is unreal. Honestly there wouldn't be anyone to pay him that much.

I don't think even 45 million is okay for him. He is 29 already.
I think he can't be sold above his current value in the market. For example, Manchester United can't find a buyer for Rashford at 40 million now. Aston Villa also doesn't want to pay that. So they shouldn't expect Watkins to be sold for a similar amount either.