Morally and ethically is have zero issue. Distractions from something like this worry me little (strong teams shouldn't be broken by something this minor).
The only problem I see is cap space, talent and fit to scheme.
If we could benefit from him limiting his own job market and get him on the cheap for a 2-3 year deal and go into next offseason with Taylor, peterman, kaepernick and a high pick as the depth chart battling it out I would be pretty ok.