It's been rumoured that Manchester City or PSG will sign Lionel Messi soon. But I've seen this news today:

https://www.bbc.com/sport/football/58114039

Guardiola says that Messi is not in their thoughts now. He thought that Messi would stay at Barcelona. They signed Jack Grealish and gave the number 10 to him. So, it looks like we may not see Messi at City. PSG seem to be closer to sign him very soon. As they have Neymar and Mbappe also, they will be the deadliest trio surely.