Impressing manager Phil Parkinson during pre-season, even saving a penalty against York City, the shot-stopper beat off competition from Ben Amos to start in goal against the Blades.
Signing a two-year deal with Bolton, the 29-year-old started his career with his Arsenal before making his professional debut during a loan spell with Falkirk.
Having enjoyed stints in Wales with Cardiff City and Swansea City and in Scotland with St. Mirren and Aberdeen, he returned to England with Blackpool in September 2011.
Making the move to Sheffield United the following February, Howard made 104 appearances for the club during his four-and-a-half stay at Bramall Lane and was a member of the side that reached the FA Cup semi-finals in 2013/14 and both the Capital One Cup semi-finals and the Sky Bet League One play-offs in 2014/15.
First choice for Wanderers during the opening 2016/17 season as they established a lead at the top of the Sky Bet League One table, Howard's impressive penalty save from MK Dons Keiran Agard in September 2016 saw him named in the EFL team of the week.