THE Welsh dynamo stunned many when he inked a long-term deal with the Potters following his stunning Euro 2016 showing for Wales.
Adored by Liverpool supporters for his tenacious and tireless approach to the game, Jurgen Klopp surprisingly allowed the midfielder to leave the Club for £13M after four years at Anfield.
The Reds' loss was undoubtedly Stoke City's gain however, with the former Swansea City ace establishing himself as a key performer in the heart of the side.
Ironically, he netted the decisive spot kick in the Capital One Cup Semi-Final against Stoke City at Anfield six months prior to his switch, before enjoying a remarkable summer.
He played a pivotal role for Wales as they reached the Semi-Finals of the European Championships, earning himself a spot in the 'Team of the Tournament' as a consequence of his impressive showings.
Allen scored six goals in a successful debut season at the bet365 Stadium, notching four in three successive Premier League games including a memorable equaliser against Manchester United as City earned a first ever Premier League point at Old Trafford.
He has become an almost ever-present in the side during his time at the Club, going on to make over 100 appearances in red and white.