There is plenty of reason to keep Ogbogu. He played OLB for Parcells in New York and has more experience there than people realize; he can back up Ware in that spot just fine. He can rush the passer from either side so he adds versatility to the pass rush packages. Also, he plays ST pretty well in several of the ST packages.
Fujita has played his entire career on the left side and that is what Parcells wants him for; to give us more size and talent on the left. Burnett doesn't seem to be developing as quickly as many thought he would and Parcells doesn't want to rush him. But Singleton is smaller than BP wants on the outside and is nothing more than a journeyman in any case. Fujita is a huge upgrade over Singleton and much more valuable there than backing up Ware. Singleton may not get cut this year because he is the only experienced backup we have to Fujita on that side. But he will be gone next year and maybe sooner when BP is satisfied that Fujita can do the job.
As for Morgan; he plays no ST, he makes over a million, he is the #5 receiver now and he was disgruntled over being #4...I just don't see him sticking around. We will try to trade him if we can but if not he will be shown the door. He is just too far down the depth chart and too high priced; call him a cap casualty or whatever, but he is gone.