Garcia apparently asked for his release in Oakland. He was their #2 behind Russell... He's not coming here, nor would he be of much use if he did. He's got no mentor in him, never did have. He either starts or he pouts and instigates. And he has no success in this type of system. Feeley couldn't hang on as the #3 on a team that drafted him, traded him to Miami so he could start, and took him back after SD had no use for him. And again his experience has been to back up guys who pull offense out of their ass.
If they add someone it will be a veteran with some background similarity including as a decent one. The guy who will help mentor Hoyer and be willing to bust his ass to be ready to go in cold on short notice if the unmentionable happens. A guy with the experience to run a difference making AFC scout team as well, perhaps. Not your long term replacement but your short term bridge.