The model and ex-girlfriend of Simon Cowell, who was the first person evicted from last year's summer series, said that only X Factor's Rylan Clark had potential in a "really poor" and "bland" cast.
When a journalist declared on Twitter that Big Brother "need a 'jasmine' in there", Lennard replied: "Badly...this is dry. If your going not going to pay for big names you've got to get the casting right.
"These people aren't...entertaining me. At all. Rylan has potential if they push him. But the rest of them may as well not be there are far as i'm...concerned.
"If i walked in there right now all i would have to say to THEM ALL is do you have any idea how f**king boring you all... are...Let's get this show started. C'mon @CBB#fireworksplease...It's really poorly cast.
Lacey Banghard shows her bra in the Celebrity Big Brother house
Lennard went on to bemoan the lack of "eye candy" in the house and said that Page 3 star Lacey Banghard would be a pointless signing "if someone doesn't f**k her".
"The glamour model has no one to play with and is just wondering around aimlessly, there's no eye candy... for the girls," she said. "There is no potential for any romance.
"The cast is SO bland. Just put them all in the basement and leave them...there. #endof."
Lennard famously caused controversy in the Celebrity Big Brother house by describing co-star Danica Thrall as "a little prostitute", before calling the lingerie model and their fellow housemate Rhian Sugden "skanks" in her live eviction interview.
Celebrity Big Brother 2013 latest pictures:
Copyright: Channel 5