The 19-year-old midfielder has made 27 appearances for the Gers this season but only recently returned to the starting line-up after a spell on the sidelines.
Zelalem, 19, originally joined Rangers in late August on a loan deal until January, but his impressive start to life at Ibox later prompted manager Mark Warburton to extend his spell through to the end of the season.
However, the US Under-23 international has struggled with niggling injuries during the second half of the campaign and been limited to just six total appearances over the past three months as a result.
Nevertheless, he recently reclaimed his spot in the side to start the club's final three league games and says that the feel-good atmosphere around the camp has been crucial to helping him get back to full fitness for the run-in.
“It was a very good start for me,” Zelalem told rangers.co.uk. “I was playing good football and the team was playing very well, but then as the season wore on I started picking up little injuries which kept me out the team.
“The team spirit is unbelievable though, and they have helped to get me through.
“The Manager and David know it’s part of football, and they have been great in helping me through everything.”
Zelalem has featured 27 times for Rangers since arriving from Arsenal, recording eight assists in the process, but he will have a chance to make one final appearance in two weeks’ time when the Scottish Championship winners face Hibernian in the Scottish Cup final at Hampden Park.
The German-born American did reveal last month that he would be open to returning to Ibrox next term for their first campaign back in the top-flight since 2011-12, but he is set to spend preseason with the Gunners first before Arsene Wenger decides what would be best for his development.