What I would do is convert the track to elastic audio (click on the tab at the bottom of the same box that has your record, mute, solo buttons etc. and click on polyphonic - the other options are for different types of recordings mostly, but for this stick with polyphonic) once converted, click on where it says "waveform" (unless you have changed it), which is located 2 boxes above the one where you clicked polyphonic, and change it to "warp".
From here you can click and drag the transients of the audio and snap them to the grid (as long as you are in grid mode according to the box at the top left of your screen) to match the tempo as you please, seeing as how this is just a small loop (If having trouble with them staying put, double click on the first transient, and one farther down the audio, so you are working inside those 2 marks).
Once in place where you want it, click on "warp" again, and change it back to "waveform". from here you can click where you want to cut it, press command-E (I think it is Control-E on windows?) If you want to loop this, click on the section so it is all selected, and press command-shift-L (perhaps control-shift-L on windows?) from the loop menu, just type in how many bars you want it to loop for, and you should be all set!
I hope this is what you were asking for