The Hulme-born 22 year old is an Old Trafford Academy graduate who was handed his first-team debut under Louis van Gaal in the 2014/15 season, going on to make 12 senior appearances that term.
Blackett, equally adept at centre-back or on the left, then spent the entirety of last season on loan at Scottish champions Celtic where he played eight times for the Glasgow side.
He returned to United in July and featured in our opening pre-season fixture, the 2-0 win at Wigan in July, but he has now decided to pursue another opportunity amid fierce competition for places.
New signing Eric Bailly is one of an number of players blocking Blackett's route back into the side, with Daley Blind, Chris Smalling, Luke Shaw, Phil Jones and Marcos Rojo all ahead of him in the pecking order.
Stam enjoyed three stellar seasons at Old Trafford, during which time United won three Premier League titles and the Intercontinental Cup not forgetting the FA Cup and the Champions League as part of the never to be forgotten treble season in 1998/99.
The former Dutch internatinal has now taken his first steps into management at Championship side Reading and has had something of a mixed start, with two draws, two wins and two defeats in his first six games in charge.
Meanwhile, promising young full-back Cameron Borthwick-Jackson has also taken the step into the second tier and joined Wolves on a season long loan move.
The 19-year-old was one of the senior side's standout stars last term, catching the eye in his 14 first team appearances and being voted as the club's Under 21 Player of the Year.
A key member of Warren Joyce's title-winning team, the talented left-back played in the Reserves first Premier League 2 game this season and will now look to gain further first-team experience at Molineux.
Borthwick-Jackson was named as a substitute for the West Midlands club's 2-1 EFL Cup win over Cambridge United on Tuesday but did not feature for Walter Zenga's side.
Following his spell at Brighton last season, United's 20 year old striker James Wilson has again moved on, this time to Nigel Pearson's Derby County on loan for the remainder of the campaign.
The striker scored twice on his Reds debut under Ryan Giggs but has found first-team football hard to come by since, hence his decision to stay in the Championship.
Everyone at United would like to wish Tyler, Cameron and James all the best for the season ahead.