Marlon Byrd (facial fractures) is likely to require a lengthy minor league rehab assignment. The Cubs want to be completely sure that his facial fractures are healed before activating him from the 15-day disabled list, which could mean asking the veteran outfielder to spend over a week in the minors. Byrd has been sidelined since taking an Alfredo Aceves fastball to the left eye socket in mid-May.