Barton is Rangers’ marquee signing of the summer so far, with Mark Warburton acting quickly to convince him to move to Glasgow.
Barton’s contract at Burnley had expired, and Rangers swiftly moved to offer him a deal to join them.
The 33-year-old’s arrival has highlighted Rangers’ ambition for their first season back in Scotland’s top flight.
And Bhoys great MacLeod said: “Barton has already come out and said he is going to make it an interesting season. I think he’ll be a great addition.
“He was player of the year for Burnley last season, so when you bring someone like that up - I watched Burnley play Rangers in pre-season last season and they were a good side - you know the quality is there and for him to be player of the year tells you he had a good season.”
Barton is Rangers' fourth signing of the summer so far, following the additions of Josh Windass, Matt Crooks and Jordan Rossiter.
Mark Warburton is set to continue making additions, as he has been backed with funds to bolster his Rangers squad for their first season back in the top flight.
Rangers have been linked with the likes of Steven Taylor and Niko Kranjcar in recent times.
Rangers cruised to the Scottish Championship title last season, and they will be looking to put an end to Celtic’s run of dominance over Scotland’s top division next term.