Middlesbrough are looking to make a fourth summer signing as they prepare a bid for one of their summer targets. After a large overturn of players in 2023, Middlesbrough are aiming to get the majority of their transfer business done early this year. Michael Carrick only welcomed his Boro players back for the start of pre-season last week but three new signings have already been made. The Teessiders kicked off their summer business by signing Luke Ayling on a free transfer from Leeds United after a successful loan spell at the Riverside last term. Steve Gibson backed a move for Dutch forward De…