Coman is too raw to be relied upon, and he's not really a striker. So with Giovinco going we can't afford to have 3 people for 2 spots. It's a basic rule you want to be at least 2 deep for every position. Thankfully our strikers haven't had legit injury concerns since the start of the season but we could quite easily find ourselves fucked with 3 strikers. Say Tevez gets injured and we're left with Morata/Llorente up front and nobody to play to let them rest. Keeping in mind we've been using a 2 striker system for god knows how many years, we can't afford to be so light in the striker department.