This is the best thing the White Sox have done for the Cubs in years.
The White Sox made a big splash in free agency Thursday, signing catcher Yasmani Grandal to a four-year, $73 million contract. Grandal joins the South Siders from the Brewers, where he played an integral role in Milwaukee making a second-straight postseason appearance in 2019.
Grandal led qualified catchers in on-base percentage (.380) last season, also posting career highs in home runs (28) and RBIs (77). He's also an excellent pitch framer, tying for fourth in RszC (runs saved by catcher framing) among all catchers with 9.
Milwaukee's payroll reached a franchise-high $122.5 million in 2019 and their farm system (No. 29 in MLB, per Baseball America) is lacking. How they replace Grandal's production is a major question mark, which in turn is a win for the Cubs this offseason.
But besides plucking him from the NL Central, the White Sox signing Grandal early in the offseason helps the Cubs, who have important decisions of their own to make.
Although Cubs president Theo Epstein said to take any trade rumors with a "mouthful of salt," multiple teams believe catcher Willson Contreras is available for trade. The Cubs need to retool their roster and replenish a farm system that has been depleted in recent seasons from numerous "win now" trades.
The Cubs and White Sox made the notorious José Quintana trade in July 2017, but it's unlikely the two would have matched up for a Contreras trade. The Cubs need young assets; trading away young assets is the last thing the White Sox want to do as their championship window opens.
So, Grandal landed with a team that was unlikely to be involved in any potential Contreras trade talks. Grandal was the best free agent catcher; Contreras is the best catcher that can be had in a trade.
Other teams interested in Grandal - such as the Reds - can no longer turn to him in free agency. The Rays have made addressing the catcher spot this winter a priority, but they have one of MLB's lowest payrolls each season. Signing Grandal wasn't going to happen, but Tampa Bay has the farm system (No. 2 in baseball, per MLB.com) to make a big trade.
Contreras is the best catcher available - for the right price, obviously - so the ball is in the Cubs' court. They don't get better by dealing their two-time All-Star backstop, but Contreras' trade value is high. With Grandal off the market, it just got even higher.