Trial counsel's obligation is to your uncle. The rules of attorney/client privilege may preclude him from sharing this information. Ask your uncle.
Unless, as indicated by Mr. Keller, you are a co-defendant you ate not entitled to that information and his counsel is clearly not obligated to talk to you about the matter. Your uncle can share that with you if he so chooses.
I agree with my colleagues. I am uncertain about why you are asking this. The only person that he should convey the offer to is his client, your uncle. Failure to tell you is of no consequence. If he failed to convey it to your uncle, then there is an issue.
Michael L. Doyle
This is not intended as individual legal advice and there is no attorney client relationship established by this answer. It is advisable that you seek individualized legal assistance. This is not a substitute for hiring an attorney.
I agree, the DA nor your uncle's lawyer have no obligation to tell you. If you are a co-defendant, your lawyer can find out.