The 25-year-old joined the Wearside giants in January 2021 from Ross County and has proved to be one of their most potent weapons up front so far into his spell.
Stewart already has 22 League One goals to his name this term and is playing a huge role in Sunderland’s quest to earn promotion.
The striker will enter the final year of his current deal at the Stadium of Light at the end of this season and several clubs from domestic quarters and abroad are eyeing a move for him.
Premier League side Norwich City and Championship side Swansea City are both keen on Stewart, while Rangers are eyeing bringing him back to the Scottish top flight in the summer.
And the Gers are now preparing to slap in a bid to snare Stewart away from Sunderland, amidst strong competition for his signature.
Rangers boss Giovanni van Bronckhorst wants to bolster his attacking arsenal in the forthcoming window and wants to add the Sunderland man to his ranks.
Sunderland boss Alex Neil has made it clear he wants Stewart to remain at the club beyond this season but stressed his current focus is on earning promotion and not on the contract situations of his players.
