Regulations around players being cup-tied have been relaxed this season, but Guehi won't feature when City face Arsenal at Wembley on Sunday afternoon because he was not being signed by the club until after their semi-final first leg against Newcastle - the cut-off date for any players moving club.
Elsewhere, Liverpool will be without Mohamed Salah for their Premier League trip to Brighton, and Spurs are still missing a host of players when they host relegation rivals, Nottingham Forest.
Find out who's missing or suspended for this weekend's action:
Bournemouth vs Manchester United (Friday, 21:00)
WON'T PLAY
Adams T. | Injury
Cook L. | Hamstring Injury
Kluivert J. | Knee Injury
Soler J. | Hamstring Injury
de Ligt M. | Back Injury
Dorgu P. | Hamstring Injury
Martinez L. | Calf Injury
DOUBTFUL
Mazraoui N. | Illness
Brighton vs Liverpool (Saturday, 13:30)
WON'T PLAY
Tzimas S. | Knee Injury
Webster A. | Knee Injury
Bajcetic S. | Hamstring Injury
Becker A. | Injury
Bradley C. | Knee Injury
Endo W. | Foot Injury
Isak A. | Broken Leg
Leoni G. | Knee Injury
Salah M. | Muscle Injury
DOUBTFUL
Gomez J. | Injury
Fulham vs Burnley (Saturday, 16:00)
WON'T PLAY
Kevin | Injury
Amdouni Z. | Knee Injury
Beyer J. | Hamstring Injury
Cullen J. | Knee Injury
Roberts C. | Groin Injury
Tuanzebe A. | Achilles Tendon Injury
DOUBTFUL
Esteve M. | Injury
Tresor M. | Ankle Injury
Everton vs Chelsea (Saturday, 18:30)
WON'T PLAY
Alcaraz C. | Injury
George T. | Loan agreement
Grealish J. | Foot Injury
Chalobah T. | Ankle Injury
Colwill L. | Knee Injury
James R. | Hamstring Injury
Jorgensen F. | Groin Injury
Mudryk M. | Suspended
DOUBTFUL
Branthwaite J. | Injury
Tarkowski J. | Injury
Gittens J. | Muscle Injury
Leeds vs Brentford (Saturday, 21:00)
WON'T PLAY
Gudmundsson G. | Red Card
Carvalho F. | Knee Injury
Dasilva J. | Knee Injury
Henry R. | Muscle Injury
Hickey A. | Injury
Janelt V. | Foot Injury
Milambo A. | Knee Injury
DOUBTFUL
Okafor N. | Hamstring Injury
Damsgaard M. | Knee Injury
Newcastle vs Sunderland (Sunday, 13:00)
WON'T PLAY
Guimaraes B. | Muscle Injury
Krafth E. | Knee Injury
Miley L. | Knee Injury
Schar F. | Ankle Injury
Bi J. T. | Ankle Injury
Mundle R. | Muscle Injury
Traore B. | Injury
Angulo N. | Injury
DOUBTFUL
Tonali S. | Injury
Ballard D. | Injury
Le Fee E. | Injury
Mukiele N. | Calf Injury
Roefs R. | Muscle Injury
Isidor W. | Injury
Aston Villa vs West Ham (Sunday, 15:15)
WON'T PLAY
Kamara B. | Knee Injury
Tielemans Y. | Ankle Injury
Fabianski L. | Back Injury
Summerville C. | Calf Injury
DOUBTFUL
N/A.
Tottenham vs Nottingham Forest (Sunday, 15:15)
WON'T PLAY
Bentancur R. Muscle Injury
Davies B. | Ankle Injury
Kudus M. | Muscle Injury
Kulusevski D. | Knee Injury
Maddison J. | Knee Injury
Odobert W. | Knee Injury
Palhinha J. | Head Injury
Boly W. | Knee Injury
Cunha | Injury
John V. | Knee Injury
Savona N. | Knee Injury
Wood C. | Knee Injury
DOUBTFUL
Solanke D. | Injury
Bakwa D. | Injury
Arsenal vs Manchester City (EFL Cup final, Sunday, 17:30)
WON'T PLAY
Merino M. | Leg Injury
Guehi M. | Inactive
Gvardiol J. | Broken Leg
DOUBTFUL
Odegaard M. | Knee Injury
Timber J. | Injury