The 29-year-old goalkeeper has struggled with injuries this season and has yet to make an appearance for the Gers’ first team.
The Scotland international was in the matchday squad for Rangers’ Scottish Championship clash against Livingston at home on Saturday afternoon. Bell was an unused substitute, as the Glasgow giants won the encounter 4-1 at Ibrox.
Warburton has suggested that he has been impressed with the hard work put in by the former Kilmarnock goalkeeper in order to regain his fitness.
“Cammy has worked hard after his eight and a half months out,” the Englishman told Rangers’ official website. “It’s been a frustrating time for him and the medical team have worked tirelessly.
“He’s came back in to training and working in the gym very hard. He knows he has a lot of work ahead of him but it’s great to see him back.”
Bell has been on the books of Rangers since 2013 and has a contract until June 2017. The 29-year-old goalkeeper has been linked with a move away from the Gers in the January transfer window.
According to The Scottish Sun, Scottish Premiership side Aberdeen made a move for Bell earlier this month, but their advances were rejected by Rangers.