The verb "receive" is not in the future tense, it is in the form of possibility, an action the "might" or "should" happen.
The "manifold/many times as much" is a word Jesus only uses twice which literally means "many forms". This is the mathematical meaning of "manifold" in geometry. In English, "manifold" means "many, many" as well.
The word translated as "present time" and as the first "age" in the NIV means "season". The "present" is made clear by the words surrounding it. A "the/this" article that is untranslated in both English versions precedes it. A "here" follows it. So the sense is "this season here". "Present time" comes close but isn't what these words mean.