It sounds like you need to teach your older son a new word or way of expressing himself. It sounds to me, as others have said, that he hates being his younger brother's entertainment center.
So, practical suggestions...
1) Your older son must understand that he does need to learn to play with his brother, but limit it to a set amount of time, morning and afternoon, so he can see the light at the end of the tunnel.
2) If older son doesn't want to play with younger son, outside of the set times, you need to support that. But, the eldest should play quietly in his room, by himself. No special priveleges for being selfish with one's time.
3) Help your younger son, as mentioned in other posts, find fun things to do without older brother. (This is very hard, but worth it.)
If your sons are anything like mine, the older boy will ultimately miss the hero worship and gravitate back to playing with his little bro. It may come as a rude shock that little bro will have more fun without him. If that happens, you must support little bro in not having to play with big bro. Sometimes big bros have to learn the hard way to be careful what they ask for. I can't tell you how often my older son refused to play with my youngest and then felt left out. Today, the worst punishment of all is to not let them play together (my sons are nearly 12 and 15.5 years old).
Good luck!