Attorneys for Dias Kadyrbayev and Robel Phillipos are expected to appear in federal court today to discuss a proposed schedule they submitted to the court.
A third friend, Azamat Tazhayakov, wasn't included. He's expected to file a separate request.
Authorities allege that Kadyrbayev and Tazhayakov removed Tsarnaev's laptop computer and a backpack from Tsarnaev's room at the University of Massachusetts-Dartmouth three days after last year's bombing.
Phillipos is accused of lying to authorities. All three men have pleaded not guilty.