About the potential signing of the season, however, Ferdinand backed Werner instead.
Fellow Germany global Rudiger was in regular contact with Werner when he was plotting his next move, with Manchester United and Liverpool both also in contention to sign him.
Havertz has forged a reputation as one of world football's finest young talents since bursting onto the scene in the Bundesliga with Leverkusen, and has opened up on his excitement after completing a "dream" move to the Premier League and Stamford Bridge.
Chelsea striker Timo Werner believes the Blues have assembled a team capable of winning titles for years to come after a $260 million spending spree in an otherwise depressed transfer market. It helps a lot to have a manager who played for such a long time in the Premier League and in the national team.
"I'm going to go with Werner", he said as he highlighted how sharp the 24-year-old was in Germany's recent UEFA Nations League match against Spain. "I watched the Premier League as a kid very often with my brother and my parents so it seems a little unreal for me and my family that I'm now sitting here and playing for a club like Chelsea".
On Mount, Lampard continued: "I love working with the young players here and it helps if Mason says those nice things about me, I like it".
"But he called me a lot, we had a lot of conversations, he texted me a lot and he sent me some videos where he could show me what style of football he wants to play with me in it".
'In the end, it will be down to us and how we play our football because we want to keep the ball, take different positions, rotate, move and create spaces for other players.
Havertz left Bayer Levekusen for Chelsea for a reported fee of £71m - a club record fee for an outfield player as he became the most expensive German of all time. "Sometimes it is very hard English and sometimes I give it to the staff here and they can tell me in easier language what they want from me".
Ferdinand was obviously referring to Ziyech's famous diagonal passes which he already showcased in Chelsea shirt in the build-up to Werner's goal in pre-season friendly against Brighton last month.
Chelsea's £71m midfielder Kai Havertz says he does not feel burdened with how much he cost and is "very excited" to learn from manager Frank Lampard.
"It was time to take the next challenge in my life because I made steps coming from Stuttgart". Not just a footballer.