City’s Max Alleyne will however be eligible to play in the competition, despite being recalled from a loan spell at Championship side Watford in January.
Champions League clubs must register a List A squad which is comprised of 25 first-team players and at least eight ‘locally trained players’ before the league phase starts.
However, Alleyne is eligible for List B, a secondary squad made up of youth players born after 1 January 2004.
He meets the criteria as he is 20 years old and has spent three consecutive years at City with a maximum of one loan move inside his association lasting no longer than one year.
Uefa phased out the cup-tied rule for the Champions League ahead of the 2018-19 campaign, allowing players to feature for two different clubs in the competition in the same season.
Paris St-Germain signed Khvicha Kvaratskhelia from fellow European side Napoli last January, and the Georgian winger helped the Parisians win the competition for the first time.
This article is the latest from BBC Sport’s Ask Me Anything team.
