[3] In March 2022, Akinsanmiro briefly joined Lagos-based club Alex Transfiguration, as he featured in the Torneo di Viareggio,[4][5] where the team reached the final before losing to Sassuolo on penalties.
[5][6] On 31 January 2023, Akinsanmiro joined Italian club Inter Milan on a permanent deal, signing a four-year contract.
[10] He made his first-team debut for Inter Milan on 25 February 2024, coming on as a substitute for Davide Frattesi in the 76th minute of a 4–0 league victory over Lecce.
[9][11] On 19 July 2024, Akinsanmiro joined Serie B club Sampdoria on a season-long loan, with an option to buy and a buy-back clause in favor of Inter Milan.
[12][13] He made his debut for the club on 11 August, starting in a Coppa Italia match against Como, which ended in a 5–4 win after the shoot-out.