Not if Martinez and Price opt out. Sure you can point out it's unlikely Price opts out, but it is still possible. Certainly not probable but definitely possible.
Martinez is certainly more likely.
And if Smith or Thornburg or another replaces Kimbrel, that eliminates that need.
It's actually possible that within two years, the Sox shed almost $120 mill in payroll. Although that number more likely is either about $63million or about $85mill, depending on Martinez. Especially if he wants to go somewhere where he can play the outfield.
That would leave the Sox needing a few players, but if this off-season is any indication, they might be cheaper to replace. ..