As tenants move out at Sunnybrook Plaza the remaining businesses are comparing notes on when they might be told they will have to leave. There are now seven vacancies including long-time merchants like Gentry Clothiers. Mac’s Milk departed a couple of days ago and workers are now gutting the store. Meanwhile a belief is growing in retail backrooms that if RioCan is unsuccessful in its proposal to build twin towers (19 and 13 floors are proposed) it may redevelop the plaza in a much more modest way. The belief at least among some merchants based on discussion with sources is that RioCan will not settle for a nine-storey compromise. Such a building would still require the expensive foundation work necessary because of the underground river crossing Eglinton and running east through Leaside Instead, this Plan B goes, RioCan would rather spend much less and instead add only a floor or two to the present plaza and have the commercial strip carry on much as it has since it was built in 1952.