If the agreement is not valid or enforceable, or if it does not apply to the position you are offering, you may be able to hire the candidate without violating the contract. However, you should still be cautious and transparent about the situation. You should inform the candidate of their obligations and responsibilities under the agreement, and advise them to seek legal counsel if they have any doubts or concerns. You should also notify the employer of your intention to hire the candidate, and explain how you will ensure that there will be no conflict of interest or unfair competition. You may be able to negotiate a waiver, a modification, or a release from the agreement, or agree on some other terms that satisfy both parties.
Hiring a candidate with a non-compete agreement can be challenging, but not impossible. You should always act with integrity and respect, and follow the legal and ethical guidelines. By doing so, you can avoid potential lawsuits and disputes, and build trust and credibility with your clients and candidates.