The Cubs are expected to be aggressive in their search for upgrades near the top of the rotation and in their late-inning relief corps, reports Patrick Mooney of The Athletic . Chicago was already expected to be in the market for catching upgrades this winter. Improvements on the pitching staff have long stood as a fairly logical pursuit for the Chicago front office.

The lineup was largely set even before Cody Bellinger passed on his opt-out opportunity . The Cubs have Michael Busch at first base, Nico Hoerner at second, Dansby Swanson at short and Isaac Paredes at the hot corner. The outfield/DH mix contains Ian Happ, Pete Crow-Armstrong, Seiya Suzuki and now Bellinger.

Each of Happ, Suzuki and Swanson have no-trade provisions. Hoerner was speculated by many — MLBTR included — to be a possible trade candidate as a result of this inflexibility on the trade front, but his recent forearm surgery makes a deal quite unlikely. The Cubs aren’t likely to add a long-term replacement.

Mooney suggests that top prospect Matt Shaw or an in-house alternative like James Triantos could bridge that gap. Hoyer told Mooney and others at the ongoing GM Meetings that there’s no timeline for Hoerner’s return just yet, but the team expects a “full recovery.” On paper, there’s a path to moving Bellinger and the remaining two years on his contract, but to this point there’s been no indication the Cubs will consider that this winter.

As such, an upgrade behind the plate seems like t.