to the exercise of discretion by the trial court. Penn s to avoid the appearance of impropriety is a worthy standard for professional conduct, a criminal defendant’s constitutional right to due process does not entitle him to a prosecution free of such appearances. Cf. Cuyler v. Sullivan, 446 U.S. 335, 348, 100 S.Ct. 1708, 1718, 64 L.Ed.2d 333 (1980) (stating that a defendant’s Sixth Amendment right to counsel is not violated when his lawyer has a “possible” or “potential” conflict of interest). Instead, a criminal defendant is denied due process only when his former counsel joins a Commonwealth’s Attorney’s office and is not effectively screened from contact with the Commonwealth’s attorneys who are handling the defendant’s case on a related matter. See Thompson, 246 So.2d at 763 (<HOLDING>); United States v. Goot, 894 F.2d 231, 236-37
holding that even where a client was more sophisticated in business matters than the lawyer himself the lawyer should have assumed the client was relying on the lawyer for the legal aspects of the loan from the client to the lawyer to the same extent that the client would rely on the lawyer for advice were the client making the loan to a third person holding than an attorney who serves as a mediator cannot subsequently represent anyone in a substantially related matter without the consent of the original parties because mediators routinely receive and preserve confidences in much the same manner as an attorney and where the mediator was privy to confidential information the applicable ethical rules impose the same responsibility as the rules relating to any attorneys subsequent representation of a former client holding that defendants right to due process was not violated by the employment of his former counsel in the us attorneys office where the former counsel recused himself and was screened from the prosecution of defendants case holding that an attorney may only undertake to represent a new client against a former client  where there is no confidential information received from the former client that is in any way relevant to representation of the current client holding that a defendants due process rights are violated only if his former lawyer prosecutes him on a matter related to the representation or discloses client confidences to other prosecutors