Miguel Amaya’s minor-league rehab is done, and he’s poised for activation with the Cubs, adding catching depth as the 40-man roster reshuffles to clear space for his return. Javier Assad moves onto the 40-man, while Nate Pearson is sent to Triple-A Iowa to make room. Jameson Taillon’s rehab progression hints at a potential Monday start in the doubleheader against Milwaukee, which could shift Ben Brown back to Iowa when rosters expand. The Cubs’ pitching staff gains depth at a critical juncture as Amaya, Assad, and Taillon rejoin the big-league club.

Assad hasn’t pitched this year due to oblique issues, but his path to the bullpen or a spot start in the doubleheader could tighten Chicago’s long relief options. Taillon, after a calf strain, carried a strong run earlier in 2025 (13 starts, 2.99 ERA, 0.919 WHIP) and could be a meaningful set of innings as the rotation re-stabilizes. McGuire’s fate hangs on roster moves, while Nate Pearson’s return to Iowa opens a 40-man slot for Amaya. Activation timing and bullpen roles will shape the Cubs’ immediate fantasy upside and the depth chart through August and September.