Not at all. He can be a complete liability at times, at any given moment he can fuck up on the ball and doesn't seem to truly commit on tackles.
To be fair to him, under Spalletti (second half of the season) he has improved a lot and has had some really decent games, but should we really taking a gamble such as this in defence?
The big question is, can Conte take the best out of him and make him play decently? Yes, he most certainly is able of that, with time.
Is time something we have on our hands? Absolutely not. We need to fire from all cylinders from the get go come august. What we can do with him is take him as a back-up and slowly blood him in the first team, then we would have on our hands a decent-ish CB.
But we should really look to someone able to play at a top level since day 1.