Warburton was appointed the Rangers manager in the summer, and he has done a brilliant job at Ibrox so far.
“There’s a belief Mark Warburton should never have been sacked last season given the quality of his work at Brentford and it’s no surprise English clubs are noticing him again at Ibrox,” Alloa forward Chopra told The Daily Record.
Chopra knows Rangers striker Waghorn from the time they were together at Sunderland.
The former England Under-20 international played with Rangers midfielder Andy Halliday at English club Blackpool.
Rangers are currently two points clear at the top of the Scottish Championship table, although second-place Hibernian have played a game more.
The Glasgow giants will take on Livingston away from home at the Almondvale Stadium on Saturday afternoon.
Meanwhile, Alloa will host Hibernian at The Indodrill Stadium in the Scottish Championship.