Ben is a strong running forward who made 23 appearances for the Warriors in 2014.
A good ball carrier, Flower is equally comfortable at Prop or in the Second Row. He makes good gains with the ball in hand and is always a difficult player to tackle.
He is also a strong defender who is committed to working hard and improving as a player.
The Welshman has made 69 appearances in the Cherry and White since joining from Crusaders in 2012.
Prior to linking up with the Crusaders he played for Welsh Premiership side Bedwas RFC and represented Wales Rugby Union at Academy level.
The 27 year-old has represented his country on numerous occasions including at the 2013 Rugby League World Cup. He was part of the side that took on Italy in the tournament opener at the Millennium Stadium in his home city of Cardiff.