Rio Ferdinand and Joe Cole are optimistic that Kai Havertz and Timo Werner will eventually prove their worth at Chelsea.
Former head coach Frank Lampard signed the German duo last summer, both arriving from the Bundesliga with huge reputations.
Havertz moved to the Blues for £71million from Bayer Leverkusen, but has been in and out of the team in his first season at Stamford Bridge.
However, in recent games, the Germany attacking-midfielder has played in the 'false nine' position, something he did frequently during his Leverkusen days - and Ferdinand can see the benefit of this.
Speaking on BT Sport, the ex-Manchester United centre-back said: “He played in a position he was accustomed to playing in back in Germany.
"That little false nine position, where he can get a feel of the game, come deep, be an extra number in midfield, and sometimes get beyond the defence as well.
"You can see the confidence coming back into his game. This kid, when he’s in form, he plays with a swagger, he’s got a really relaxed vibe to the way he plays.
"He’s a technical player, he’ll eventually become a top, top player for Chelsea, but it’s going to take time. Sometimes personalities count, he’s quite a reserved kid in some accounts.”
Werner, as opposed to Havertz, has been a more frequent figure under Lampard and Thomas Tuchel since the latter took over, but the Germany striker has struggled in front of goal this season.
Cole, formerly of Chelsea, believes the 25-year-old has still had an impact during his first campaign, though.
"He’s trying to find a way of getting him back to his best, Werner," the ex-Blues winger said.
"He’s (Tuchel has) boosted him up, he’s told him to not do the finishing (drills), maybe taking him out of the firing line a little bit.
"Werner will have an impact, he’s made an impact with 10 or 11 assists already.
"It hasn’t worked for him in front of goal, but I think like Havertz, he’s settling down.
"I think Werner will eventually settle down, we might see that next season. But in the current climate, the pandemic, it must be difficult for these players.”