How can i get Non Copyrighted Images for my blog?

I am running a blog, i applied for Adsense. Google replied that my blog got some copyrighted images . My website is on football so i can not get all the pictures by myself LOL… Can i use the Getty images used on espn or soccerlens or some big football websites. Those pictures got no watermarks or something.
Any further advice on how shall i use the names of the images to avoid copyright law? Any tricks?

See original post by Zaber Ansary