Johnny McPhillips has joined Doncaster Knights on loan from Leicester Tigers until the end of the season on a dual-registered contract.
McPhillips joined Tigers from Ulster during the summer and has since made appearances in the Premiership Rugby 7s and opening round of the Premiership Rugby Cup away to Worcester.
The 22-year-old will make his Doncaster debut in this weekend's RFU Championship Cup clash with Jersey Reds.
Tigers head coach Geordan Murphy said the opportunity provides McPhillips vital game time in a competitive environment.
"Johnny has been fantastic since coming in to our club and this opportunity with Doncaster gives him the vital game time he needs to continue his development," said Murphy.
Doncaster director of rugby Clive Griffiths was pleased to add further depth to his squad.
“We have re-opened links with Leicester Tigers and are pleased to have Johnny join the squad, he has a specialism in a number of positions and will help us massively with our injury crisis in the backs," he said.
"He has a quality about him with his career so far as he has played at a high level with Ulster, Leicester and the Ireland U20s.”