If this match is pursued and done, I think they can now pursue the Garcia match. 
I wonder if Garcia would still want Manny if Manny will destroy Spence. And if Manny loses in the Spence fight, the interest will also drop in his fight against Garcia, so I think what Garcia's camp is protecting here is the current value, or maybe they are just making news but their case is not really that strong.
Manny has nothing to lose in this fight and win or lose against Spence, the interest of Garcia to fight Manny will not drop as it will always be a money-fight regardless of the outcome of the Spence fight.
I wonder if Manny could still focus on his training with this recent spat with the President of the Philippines. This recent issue had an effect on his popularity as a politician and also a little bit as a boxer as the focus will not be the same when he has nothing to worry about back in his homeland.