Clue #1 - he's a professional footballer
Clue #2 - he's just played in the Championship
Clue #3 - he's out of contract in the summer
Clue #4 - he might have played as a goalkeeper, or maybe in defence, could have been midfield, or possibly as a striker
Clue #5 - at some point last season he kicked a ball, made a tackle, completed a pass, headed the ball, had a shot on goal
Clue #6 - the shirt he wore last season matched that of the club he played for, and had their badge on the front, and his name and number on the back
Clue #7 - both his first name and surname start with letters between A-Z
Blades fans, it's over to you.
Who is the mystery player?