Former Genk boss Alex McLeish expecting big things of the 19-year-old superstar.
Mourinho remains interested in signing 32-year-old Portugal international, according to reports.
The Foxes stopper suffers muscle injury after recovering from concussion but Papy Mendy out.
Isco is out of favour in Madrid and could be attainable for a fee of around £25m.
The Ivory Coast international says Juventus wanted to sign him in 2013 after the Undr-17 World Cup.
Antoine Griezmann has emerged as Jose Mourinho's target for next summer.
Wales international has reportedly asked Real for a new deal worth £14.3m per year.
Guzman becomes third fresh addition to Jose Mourinho's backroom staff at Old Trafford.
Dean Henderson has joined Grimsby Town on loan until January.
Will Keane made three first-team appearances for Manchester United.
Schweinsteiger, 32, remains hopeful of forcing his way back into United's first team.
Will Keane has made just three senior appearances for Manchester United.
Dominic Calvert-Lewin has made just one appearance for Sheffield United this season.
Nottingham Forest winger Oliver Burke, 19, is also attracting interest from Bayern Munich.
Sam Johnstone is keen to impress United manager Jose Mourinho and break into the first-team.
Fabinho, primarily a right-back, has started the new season as a defensive midfielder.
Portuguese manager remains keen on signing an experienced defender before the transfer window shuts.
Matthew Knox spent time on trial with Manchester United in January.
Merson bemoans Arsene Wenger's failure to sign a quality defender during 20 years at the club.
Cameron Borthwick-Jackson made 14 first-team appearances in all competitions last season.
Championship club have also raided Benfica to sign Dutch winger Ola John.
Jose Fonte admitted that he was flattered by Manchester United's interest.