Looks like silver maple. Yeah, that's a problem in the future for it. Prb'ly need somebody w/chainsaw experience to cut 3 off at base but not damage the 4th (which should be whichever the biggest, straightest one is). Might be done w/a SHARP handsaw, but it would wear someone's hand/arm down really bad.

I might go a step further and suggest removal if in 20 years it will overhang anything you care about. Replacements are cheap and you can do better.

Consider:

Silver maples are not great choices near structures even if they have great form.

Silver maples do not seem to encapsulate pruning cuts well. CODIT does not work well for the.

That said, I bet you get about 20 years from that tree before it is an issue.

Downside being it will cost $,$$$ to remove then.

If it won't fall on anything important I like silver maples. Neat bark, fast growth, early red flowers, good natural yellow fall color. In that case I'd leave it alone or maybe saw off one competing leader a year. Save the one which seems to be encapsulating (growing around) the others.

I wish I could "like" Ken's comment more than once.

While I don't like to cut down cosmetically nice looking trees, I think this one should go. Yes I like the graceful spread of trunks, BUT when you zoom the picture it looks like the trunks may be growing from the stump of a tree that had been cut down. This will be a problem in the future. We don't know if rot had started in the middle of old stump and covered up by the new "branches."

While I can not tell definitely there appears to be a nice maple to the left (picture) of the one in discussion, that will be a better tree in the long term for your back yard.

Thanks for the input everyone, much appreciated!