Off to a great start with his new squad, Pablo López is closing in on a four-year, $73.5 million extension with the Twins, a source told MLB.com’s Mark Feinsand on Monday morning. The team has not confirmed.

López, acquired by Minnesota this winter in a trade that sent 2022 American League batting champ Luis Arraez to the Marlins, is 1-1 with a 1.73 ERA in four starts this season. In 26 innings, López has struck out a Major League-leading 33 batters and walked just six.

The Marlins are set to acquire reigning AL batting champ and All-Star infielder Luis Arraez from the Twins for right-hander Pablo López and two other players, a source told MLB.com’s Mark Feinsand on Friday. Neither club has confirmed the deal, which is expected to send infield prospect Jose Salas and outfield prospect Byron Chourio to Minnesota, according to Feinsand.

Salas, 19, is ranked by MLB Pipeline as the No. 5 prospect in Miami’s system.