External Link on Homepage?

Hello everyone,

I was looking for a few opinions... A client of mine is in the limousine service industry and is a long time member of a reputable, local tourism information company. We have a digital badge available for us to use mentioning our affiliation. Since both companies are related to travel and hospitality, I am considering displaying this badge and linking out from our homepage to their website. I feel it would benefit his clients who are arriving in town looking for additional travel resources.

With this said, would linking out from our homepage be considered safe in terms of SEO? If so, any suggestions on nofollow or follow?

Any input would be greatly appreciated.

Thanks