Sponsor's Banner, should I approve this, PG-13

Alright guys so a sponsor just sent me the banner that they want to use, i'm debating if i should approve it or tell them they need to clean it up a little more. It's a gif so if you guys could look at the whole thing that would be great, right now I'm thinking it would make my site not viewable by people at work.

It doesn't seem to be a good match with the tone of your forum. Your template and content seem to be of a higher level of professionalism.

Thats what I was really thinking i just need a confirmation from someone else, should i tell them to rework it or just tell them at this time we have to pass.

You could provide suggestion revisions, but if there entire site takes on that theme, you'll still be linking to a site that is not really in synch with what you're doing at your forum. It really comes down to what you're comfortable with.