Sunderland face tough competition from Middlesbrough to sign a Premier League attacker before the deadline. Sunderland are rapidly running out of time to bolster their squad before the 11pm deadline, though it still looks like they will confirm the signing of midfielder Callum Styles. However, their pursuit of Burnley’s Manuel Benson still seems to be up in the air. It was reported earlier today that the Black Cats are ‘in talks’ over a move for the Belgian, though it is going to be a huge challenge to get a deal done before the deadline. It has now been made even harder by Middlesbrough’s arr…