Aberdeen FC's summer transfer window has kicked off with the signings of Lewis Mayo, Brad Lyons, and Alexander Briedl. The trio joins the club on two-year deals, with Mayo signing a three-year contract. Stephen Robinson's first summer signings follow captain Graeme Shinnie's departure, with the 34-year-old midfielder returning to Inverness Caledonian Thistle. Robinson said Briedl 'brings many of the qualities' he wants in a midfielder and that he will be a 'good fit' for the Scottish Premiership. He added that Lyons brings 'a real competitive edge and strong leadership qualities' and that Mayo is a player they have 'admired for some time' for his consistency and professionalism. The signings are a boost for the club ahead of the new season, with Robinson looking to strengthen the squad and push for a top-six finish in the Scottish Premiership.