With the league expanding, there will always be room for reliable players, even if it's as a last resort or when injuries arise. How many times did Mann's name come up over the last few years?
Look at players like Caporn, Davidson, Darragh, etc.
Might not have a long, long-term future, but has enough to keep him employed for a few years and that's enough time for teams to see what he can do.
Things that won't change and will prove to be assets are that he knows his place and will fit well with any team because of that.
The best part is that he's been instantly useful - hasn't taken 2-3 years to get up to NBL speed. You could watch him out there in the final minutes of a close game or in the second quarter of an ABA match, and he'd still be doing the same stuff. With time, his shot percentages will lift and he'll have one weapon more than a guy like Paul Henare, who is not as reliable an option from outside.