From my perspective, as a former federal prosecutor and, currently, as a criminal defense lawyer, there is no way I would want my client to meet with government agents in his circumstances!
For example, I would be worried that the feds would try to trip him up, in order to bring a false statements charge against him, just like they did with Michael Flynn.
Plus, serious questions have been raised recently about bias in Special Counsel Mueller's team against the President.
In addition, here, presumably, the defense team doesn't know all the potential evidence that Mueller's team may have against their client.
So, in my opinion, I would hope the President would take my advice, as his lawyer, and not submit to an interrogation. Mr. Cobb and other folks on the President's team should, instead, be insisting that Mueller should simply submit any questions to them and then they may provide written responses.
What do you think?