DISCLAIMER: Confirmed transfers or rumours that come out reliable sources ONLY (tier 1 - tier 2 + sports related regional newspapers in France). See that post on Reddit for compiled sources.

"Tier 1 - Almost undisputed when discussing a Transfer Rumour. They may not be the first to discuss a rumour, but if they are talking about it; then it is almost certainly true, and possibly close to complete."
Tier 2 - Known to have current sources, but are still fallible and just short of being considered an authority on rumour discussions. However, multiple individuals or sources from this tier reporting the same rumour may indicate a strong possibility of truth to the rumour.
Tier 3 - Unreliable, and not to be trusted solo. They fall into near click-bait practices and are often fighting for relevance in a sea of rumours.

PARIS SAINT-GERMAIN

No surprise, it's expected to be another turbulent summer for the capital side. According to Mohamed Bouhafsi via RMC Sport , beginning of june - Barcelona have made contact with PSG to discuss a possible deal for Neymar though declined by president Al-Khelaïfi. No concrete offer thus far.

Unlike what has been reported - 19 years old goalkeeper of Chelsea, Marcin Bulka hasn't signed yet for PSG. Speaking of young talents, Raphaël Nya will sign a 3-years contract with Wolverhampton. He was captain of the u19 squad. Moussa Diaby signed to Bayer Leverkusen while RB Leipzig is interested in signing Christopher Nkunku.

Paris United reports that Sevilla midfielder Pablo Sarabia is close to sign to PSG as Diaby’s replacement.

LOSC LILLE

The great season of LOSC has revealed many players, one is Nicolas Pépé who attracts the interest of several top clubs; Liverpool to name one. Transfer fee might be between 70M€ and 90M€.

Olympique Lyonnais president himself confirmed that Brazilian midfielder Thiago Mendes might possibly join the club as Ndombélé's replacement for €25m fee.

OLYMPIQUE LYONNAIS

Similar situation to PSG. OL is starting a new cycle with a new coach and sporting director - leading up to a few key players set to be leaving the club.

The Guardian and RMC Sport have confirmed that Tottenham is interested/or made an offer for the Ndombélé. Yet no official statement has been released. Brazilian defensive midfielder Jean Lucas (ex Flamengo) was introduced at a press conference. He is expected to be a starter and Tousart as a backup.

I'll cover the following clubs in #2 (Rennes, Saint-Étienne, Monaco, Montpellier and Nice). Stay tuned!