Pouncey was approached by Massachusetts State Police and given a grand jury subpoena following the Dolphins' game at New England on Oct. 27 related to former college teammate Aaron Hernandez, who remains jailed on a first-degree murder charge.
Police view Pouncey -- not a suspect in the murder case -- as someone who could help in the investigation.
Pouncey, who has started all but two games since 2011, is expected to return to the team in time for Sunday's home game against the Patriots, a team source told the South Florida Sun-Sentinel. The Dolphins don't have a practice scheduled for Thursday.
While Maurkice, an All-Pro center who suffered a season-ending knee injury in Week 1, apologized for wearing the hat, Mike elected not to discuss the matter in July.
Hernandez, the former Patriots tight end, is charged with killing former associate Odin Lloyd in June. Hernandez also is being investigated for gun trafficking.
Mike Pouncey and Hernandez played together in college at Florida, where they shared an apartment.