A maple, but you've already got that. Possibly Sugar Maple, that looks the best fit of pics I've checked. Not Norway, Sycamore, or Manitoba, and I don't think Red, or Silver. What size tree is it? Any bark pics?
Here's a photo of a saccharum terminal bud; I regret that I don't have good laterals. The only thing that bothers me with a saccharum ID is the color of the bark--I don't think of them as having green bark, but rather shades of red or brown.
