| Keil Aaron O'Brien|
| Stockport, England|
2014 (Bury F.C.)
| (1992-06-29) 29 June 1992 (age 24)|
Stalybridge Celtic F.C. (Defender)
Keil Aaron O'Brien (born 29 June 1992) is an English footballer who plays for Stalybridge Celtic on loan from Southport, as a central defender.
Keil O'Brien Wikipedia
A Manchester United youth graduate, O'Brien made his senior debuts with Glossop North End in 2009. He joined Northwich Victoria in the 2010 summer, but was deemed suplus to requirements in January 2011.
O'Brien was loaned to Radcliffe Borough in February 2011. After appearing regularly he moved to Mossley in August 2011; he made 60 appearances for the club before joining Chorley in December 2012, for an undisclosed fee.
O'Brien only won recognition in the 2013–14 season, where he appeared in 40 matches and scored two goals, as his side was promoted to the Football Conference as champions. He was also named in the campaign's Team of the Year.
On 19 June 2014 O'Brien signed a two-year deal with League Two side Bury. However, he suffered a knee injury in September, being sidelined for a few months.
O'Brien made his professional debut on 16 December 2014, starting in a 0–1 away loss against Luton Town in the FA Cup. On 21 October of the following year he was loaned to Halifax Town, until 9 January.
He joined Southport in August 2016. In the same month, O'Brien returned to F.C. Halifax Town on a month's loan.
At the end of September 2016 he joined Stalybridge Celtic on loan.