Most sport bikes can atke 25-32mm tyres.
There is wide variation in what exactly a 28mm tyre is. Some are light and narrow, others are wide and tough.
If you pick a narrow brand (like Panaracer), then the 28 will fit, and be quite light/fast, but their 25mm may be on the small side for your rims. The only way to tell the real size is to compare it to your current width, by sight.