I compared Zakaria and Benta this morning on squawka or w/e the name of the site is. Zakaria is the better tackler, Benta has more interceptions. The big difference is fouls, Zakaria is way better here.
Offensively it seems like Zakaria is again the better player. He can initiate some counters with his runs, Benta is exactly the opposite, he always goes for the easy back pass due to his inability to do some useful ones forward.
If Spurs are offering 30m and we can get Zakaria for 7m, both on comparable wages and Allegri approves, then there's no reason not to do this. I'll take Benta over Rabiot/Ramsey/Arthur but let's be honest - he contributes massively to the "our midfield sucks" cause.