CHICAGO -- The Chicago Cubs agreed to a minor league deal with Pedro Strop on Friday, bringing back the popular reliever after he was released by Cincinnati, according to ESPN and multiple reports. The deal was pending a physical.

Strop will report to the team's alternate training site in South Bend, Indiana. The Cubs are leading the NL Central, but their bullpen has struggled at times.

Wearing his hat off to the left, Strop became a fan favorite in Chicago after he was acquired along with Jake Arrieta in a 2013 trade with Baltimore for Scott Feldman and Steve Clevenger.

The 35-year-old Strop made at least 50 appearances in his last six years with the Cubs, mostly in a setup role. He was a key member of the 2016 team that won the franchise's first World Series title since 1908.

But Strop struggled last season, going 2-5 with 10 saves and a 4.97 ERA. The Cubs missed the playoffs for the first time since 2014, and Strop signed a $1,825,000, one-year deal with the Reds in February.

Strop had no record and a 3.86 ERA in four appearances with Cincinnati. He was sidelined by a right groin injury last month, but he was reinstated from the IL on Aug. 26 and then designated for assignment.

The Associated Press contributed to this report.