Is it permissible to ask another Graphic Designer freelancer to take over my client's work?

I'm a graphic design freelancer and I was asked to design a logo by a client. I designed the logo for my client but the client did not like any of my logos and asked me to design more. I have a feeling he won't like my designs again. So, is it okay if I ask another freelancer from a different company to design a logo for my client? What do I do?