Put it in second gear, pull the clutch lever in and see if it will jump-start.
Have someone helping to push it on flat land, or by yourself down a slight grade. After you get it rolling let out the clutch slowly, with the key turned to the on position.
When I bought my 2008 ZZR600 it had sat for months and would not turn over. A new battery did not help. It took some rolling back and forth with it in gear to break the engine or starter loose.
“Banking institutions have banished precious metals and substituted a more fluctuating and unsafe medium; they have withdrawn capital from useful improvements and employments to nourish idleness for the few, who prefer demoralizing pursuits to labors useful to the whole; the peace of the whole is endangered by evils more easily to be deplored than remedied." by Thomas Jefferson,1810 (edited)