He needs to be playing regularly with us (at least 30 games per seasons) to get in the groove. True enough, he is bound to make a mistake or two at such high level, but this is necessary for growth.
My hearts goes out to young defenders in Serie A because there is often a misconception here that defenders under the age of 26 are bound ‘too inexperienced’ and they have to wait till they hit 30 to be considered reliable.