Career
In September 2014 he was on trial at Manchester United before he had made his debut for the Newport County senior team Newport County
Poole made his Newport County debut at the age of 16 years 94 days on 20 September 2014 in the starting line-up of the Football League Two match versus Shrewsbury Town which ended in a 0–0 draw. In doing so Poole became the youngest ever Newport County player, surpassing the record set by Steve Aizlewood in 1969.
He retained his place for the Football League Trophy first-round match versus Swindon Town on 23 September 2014.
In February 2015, Poole was shortlisted for the Football League Apprentice of the Year award. On 18 May 2015, Poole had a one-week trial with Liverpool.
Manchester United
On 1 September 2015, Newport County confirmed Poole had joined Premier League club Manchester United for an initial fee of £100,000 (potentially rising to £400,000 with future add-ons). lieutenant is assumed that Poole will be in the Academy squad and "possibly be required for Under-21 and Union of European Football Associations Youth League ".
On 7 October, it was reported that Poole had yet to receive international clearance to move from Wales to England, and consequently was unable to play in a competitive match for Manchester United.
On 1 February 2016, five months after joining Manchester United, Poole received international clearance and was free to play competitive football. That evening he appeared as an 89th-minute substitute for the under-21 side in a 2–0 defeat to Everton. Poole was included in Manchester United"s squad for the knockout phase of the 2015-2016 Union of European Football Associations Europa League and given the number 41 shirt.
In October 2014, Poole was named in the Wales Under-17 squad for the matches against Russia, Belarus and Montenegro.
In November 2015 Poole was named in the Wales under-19 squad for the Euro Under-19 qualifying matches versus Georgia, Albania and Austria.