According to a report from The Athletic, Beşiktaş showed interest in Kobbie Mainoo. The report also states that Manchester United and Kobbie Mainoo have reached a principle agreement to extend his contract. It is noted in the report that the 20-year-old English midfielder, whose contract was set to expire in 2027, is open to staying with the team and that an official announcement is expected soon.

Sabah Spor reports that Besiktas have made an offer to Manchester United for an 18-month loan deal for Kobbie Mainoo.

According to Fanatik, Besiktas is interested in securing Kobbie Mainoo on loan. The club has inquired about the loan conditions for the player. A decision on whether to proceed with the transfer will be made after a cost analysis.

Beşiktaş is among several clubs interested in Manchester United's English midfielder Kobbie Mainoo. A report also indicates that Fenerbahçe, Everton, and Napoli are pursuing the 20-year-old player. His contract with Manchester United is valid until 2027. Mainoo, who joined United in January 2023, has 10 caps for England and has made 11 appearances in the Premier League this season. His current Transfermarkt market value is €40.00m. Recent reports on his potential transfer fee have varied. Manchester United's asking price was frequently cited between €83 million and €90 million in late 2025, while a valuation of £80 million (approx. €95 million) was also mentioned in December 2025.