A day that started with a potential trade between the Yankees and Mets turned to another potential blockbuster with the White Sox partly out of concern for closer Aroldis Chapman.

Late Tuesday evening, the Yankees were close to acquiring 1B/3B Todd Frazier — the Toms River, N.J. Little League legend — and relievers David Robertson, the former Yankee, and Tommy Kahnle from Chicago, according to multiple reports.

“It’s definitely happening,” a source told the Daily News.

Top Yankee outfield prospect Blake Rutherford and struggling reliver Tyrler Clippard, according to USA Today, appears to be part of the package going to the White Sox.

A source told the News the Yankees are motivated by concern for closer Aroldis Chapman, specifically his lack of a swing-and-miss fastball.

At the very least, the Yankees want to make sure they can limit Chapman’s innings and appearances to try to keep his arm as fresh as possible. Chapman spent five weeks on the disabled list with shoulder inflammation and while the Yankees aren’t concerned about long-term injury, they are puzzled as to why his blowaway velocity has not returned since last year.