A General Manager (GM) wants to write a personal check for a
charitable contribution of $1000 in order to influence a potential
client
who is active on the entity's board. He sponsors a fund-raising
breakfast and invites subcontractors to participate and make donations.
Is this Ethical or Unethical??

Please reply and let me know your thoughts...

Again this is not based on what is legal, this is simply a matter of
what you consider to be ethical.