Suarez wouldn't be a good signing, he's just not that good of a player. 10mil€ max, but he doesn't have the quality to make Juve contenders.
And i don't think fans should expect more than 2 or 3 signings, like last year. Mexes/Kjaer and Caceres and maybe a winger/striker. Secco really fucked it up with the likes of Cannavaro and Grosso last summer.