The Senegal international was recruited in the summer from French club Rennes on the recommendation of technical direct and club legend Petr Cech.
With club-record signing Kepa Arrizabalaga struggling to justify his £72million fee, Mendy was immediately handed an opportunity to cement his status as the club’s undisputed No.1.
The 29-year-old justified Frank Lampard’s faith prior to his sacking and he has maintained his form under the management of Thomas Tuchel.
Mendy was called into action on several occasions to help preserve a point against Leeds United on Saturday, making excellent saves from Tyler Roberts and Raphinha either side of half-time.
And despite another impressive performance, Ferdinand believes Mendy needs to improve his distribution, particularly with his feet, if he is remain Tuchel’s long-term No.1 amid reports Chelsea are eyeing AC Milan’s Gianluigi Donnarumma.
Ferdinand told BT Sport: ‘I can talk about it (Mendy’s impact) from a defender’s perspective, confidence just flies throughout the team.
‘I think he’s got a real commanding presence. With his feet I think he’ll improve, he needs to. But everything else in terms of a goalkeeper the most important thing is saving the ball, I think he’s very sound.’