Kalvin Phillips is undergoing a medical at West Ham on Thursday ahead of his loan switch from Manchester City.
The England midfielder has agreed a move to the London Stadium until the end of the season.
West Ham will have an option to buy Phillips once the loan deal is over.
The PA news agency understands the loan deal will be announced either later on Thursday or on Friday morning.
Phillips joined City from Leeds for £45million on a six-year contract in July 2022.
But the 28-year-old has never managed to hold down a regular spot in Pep Guardiola’s side and has not started a single Premier League match this season.
Crystal Palace and Newcastle were also interested in Phillips but he has opted for West Ham, who are currently sixth in the table and in the last 16 of the Europa League.
Phillips knows he needs game time with Euro 2024 coming up this summer.
City boss Guardiola admits he feels responsible for Phillips’ lack of game time and hopes he sees more action with the Hammers.
Guardiola said at a press conference: “Hopefully he can play the minutes he deserves and I couldn’t give to him.
“I wish him (well). I’ve said many times, he’s an exceptional human being and a football player, otherwise he wouldn’t be in the national team. Hopefully he can prove what he really is.
“Of course, if I give him 10-15 games in a row he would be good, but I didn’t give them to him and I feel so responsible for that.
“But, at the same time, I am honest with myself. I have players at my disposal, a squad, and I have to decide what we are looking for.
“All I can say is I am so grateful for his behaviour on and off the pitch and hopefully he can find minutes, and next season we will see what happens.”
Hammers boss David Moyes is also looking to offload players with Algeria winger Said Benrahma likely to leave before the transfer window closes.
Ajax’s Steven Bergwijn is a potential replacement for Benrahma with Moyes keen to build on West Ham’s strong first half of the season.