The company I work for asked if they could use logo designs I created as a freelancer on their website to market the logo design portion of their company on lead generation sites.

My take is that my clients would not appreciate seeing their logos showing up on a company's website that they've never dealt with. The other issue I have is that I've signed a non-compete and a contract which states that any work I create during my employment remains the copyright of the company I work for. I feel wrong giving them my work when I legally can't use work I've created while working for them on my online portfolios. Is there a more concise copyright infringement that is being violated here that I'm not aware of? What would you do in this situation?