Former Bears wide receiver Brandon Marshall

Chicago Bears wide receiver Brandon Marshall (15) makes an touchdown catch past Minnesota Vikings cornerback Josh Robinson (21) during the second quarter at Solider Field on Nov. 16, 2014, in Chicago.

Chicago Bears wide receiver Brandon Marshall (15) gets tackled by Minnesota Vikings strong safety Robert Blanton (36) during the second quarter at Solider Field on Nov. 16, 2014, in Chicago.

Chicago Bears wide receiver Brandon Marshall (15) reacts after making a reception for a touchdown in the second quarter at Soldier Field on Nov. 16, 2014, in Chicago.

Brandon Marshall sits on the bench late in the fourth quarter.  (Chris Sweda / Chicago Tribune)

Brandon Marshall stands during the National Anthem while attending a prep football game between St. Rita and Mount Carmel at St. Rita on Chicago’s South side in 2014.

Chicago Bears wide receiver Brandon Marshall (15) is roughed up by Cleveland Browns inside linebacker Craig Robertson (53) after making a catch during the first quarter of their game at FirstEnergy Stadium in Cleveland, Ohio, on Dec. 15, 2013.

Brandon Marshall becomes emotional at his press conference detailing his contract extension.  (Chris Walker / Chicago Tribune)

Chicago Bears’ Brandon Marshall tries to escape tackle by Detroit Lions’ Louis Delmas in 1st quarter during NFL game at Soldier Field in Chicago on Nov. 10, 2013.

Chicago Bears wide receiver Brandon Marshall (15) is tackled by Minnesota Vikings cornerback Captain Munnerlyn (24) after a reception in the first quarter at Soldier Field on Nov. 16, 2014, in Chicago.

Chicago Bears wide receiver Brandon Marshall (15) scores a touchdown against the San Francisco 49ers in the fourth quarter at Levi’s Stadium in Santa Clara, Calif. on Sept. 14, 2014. The Bears beat the 49ers 28-20.

Chicago Bears’ Brandon Marshall lies on the turf at end of 33-28 loss to Green Bay Packers in NFL game at Soldier Field in Chicago on on Dec. 29, 2013.

Chicago Bears wide receiver Brandon Marshall (15) makes a catch in front of Detroit Lions free safety Louis Delmas (26) during the second half of their game at Ford Field. in Detroit, Michigan, on Sept. 29, 2013.

Bears wide receiver Brandon Marshall during warmups before the game against the Panthers in 2014.

Bears GM Phil Emery poses for a portrait with two new players, Brandon Marshall and quarterback Jason Campbell on March 16, 2012.

Brandon Marshall poses for the media after a press conference at Halas Hall on March 16, 2012.