According to Jose, he is the worlds best young defender. If there is even the slightest glimmer of hope of getting his signature, Mourinho is sure to pounce at the opportunity. Imagine Azpi--Varane--Zouma/Kalas--Shaw as our back four in 2-3 years time. That could be the most most formidable back four in Europe( of course there is the lack of experience) This summer transfer window is going to be exciting times as a Chelsea supporter.