Ms Rayner resigned as deputy prime minister, housing secretary and deputy Labour leader in September.
It came after an independent ethics probe found she had breached the ministerial code over her underpayment of stamp duty on a seaside flat.
The Prime Minister said in an interview with The Observer that he missed Ms Rayner and said misogyny had played a part in the level of criticism she and Chancellor Rachel Reeves have received in recent months.
Sir Keir was asked if he missed his former deputy and said: “Yes, of course I do. I was really sad that we lost her.
Point to consider:
How much coverage did the media give to Angela Rayner’s stamp duty.
How much coverage has the media given to Farage’s Clacton house paid for by his partner to avoid stamp duty.
Wonder why there is a difference?
— John Petrie #European (@Petrie_JohnC) December 6, 2025
“As I said to her at the time, she’s going to be a major voice in the Labour movement.”
Pressed as to whether she will be back in the Cabinet, he added: “Yes. She’s hugely talented.”
Conservative leader Kemi Badenoch argued during Prime Minister’s Questions last month that any return for Ms Rayner should be on the condition that “she must pay back the £40,000 of property taxes she avoided”.
Earlier this week, a source close to the former deputy prime minister said she will “not be played like a pawn” after reports of a deal for her and Health Secretary Wes Streeting to run for the Labour leadership.
The source said “there is no vacancy and there is no pact”, after The Daily Telegraph reported that allies of Mr Streeting were pressing Ms Rayner to sign up to a “joint ticket” for the top job.
Sir Keir insisted that he had no intention of stepping aside before the next election.
He said: “When I took over the Labour party, everyone said to me, ‘you’re not going to be able to change the party’. We ignored that and carried on.
“Then they said to me, ‘you’re not going to be able to win an election’. We got a landslide Labour victory.
“Now, 17 months into a five-year Labour term, they say ‘you’re not able to change the country’.
“Every time we’ve been in this position, we’ve defied them. And that’s what I intend to do.”
