Do we need to sell Suarez if we get an offer of around 50 MIL
Absolutely right Colin. There is only one reason to sell Suarez, and that is if he asks to be sold, but to date while we all know he'd like CL football, all the noises coming from him and his camp is that he loves the club and the city, believes in the manager and the project underway, and therefore imo will give us at least one more season in an effort to get that CL football with Liverpool.
Simple truth as you say, is no club sells its best players unless it has to. What we need to be trying to do is buy additional players who can complement Suarez not replace him. Yes all the cash a sale could generate would be nice, however buys like Coutinho and development of players like Sterling show you don't have to break the bank to improve the squad.