The 30-year-old Japanese striker joined Celtic in 2021, netting 85 goals in 165 matches across all competitions.

"The arrival of Kyogo is what the whole club wanted. He has a technical profile that will strengthen the dressing room. He joins us after a fine career with Celtic and a number of trophies won in Scotland," said Rennes executive president Arnaud Pouille.

Going in the opposite direction is 25-year-old Jota, who has rejoined the club where he scored 28 goals in 83 outings between 2021 and 2023, winning two Scottish league titles.

The Portugal under-21 international left the Glasgow outfit to join Saudi side Al Ittihad before moving to Rennes in August last year.

Brazilian Talisca has signed for Turkey's Fenerbahce, with the attacking midfielder leaving Al Nassr Club after almost four seasons with the Saudi Pro League side.

Also on the move was Joao Pedro, with the Brazilian centre-forward leaving Saudi Arabia's Al Taawoun for UAE Pro League side Al Wasl.

Australia defender Hayden Matthews has joined English Championship side Portsmouth from Sydney FC.

The 20-year-old, who had been with the A-League club’s academy since he was 12 years old, leaves Sydney in a club record deal two months after making his debut for the national team against Bahrain in the AFC Asian Qualifiers™ – Road to 26.

“I’m incredibly excited to join Portsmouth FC and take the next step in my career,” said Matthews, who has played 35 times for the club – including six times in the group phase of the AFC Champions League Two – since making his senior debut earlier in the season.

“Sydney FC has been like a second family to me. They’ve given me the opportunity to chase my dream of becoming a professional footballer and playing in Europe, and I’ll always be grateful for that.”