Gunner the Rescue Dog Needs Help!

This is Gunner, our first foster dog! We received Gunner about three weeks ago and immediately noticed he was limping on his back right leg. After a visit to the vet, we were informed that he has a torn right CCL. The vet recommended surgery to repair his leg.  Unfortunately, the rescue organization does not have the funds to pay for this surgery. I want to permanently adopt Gunner, but as a recent college graduate I cannot afford the surgery either.  Gunner is extremely active and loves playing fetch outside. 

Please help me keep the runner in Gunner! Any donation is greatly appreciated!