The White Sox will designate reliever Frank Francisco for assignment tomorrow, Dan Hayes of CSN Chicago reports on Twitter. The move will clear roster space for the return of Chris Sale.

Francisco, 34, has been hit hard in his limited time with Chicago this year. Through 3 2/3 innings, he has allowed 5 earned runs on 7 hits (2 home runs) while striking out 5 and walking 3 batters. Francisco signed a minor league deal with the White Sox over the offseason. Before the 2012 season, he inked a two-year, $12MM pact to serve as the Mets closer; though he notched 23 saves in New York, Francisco managed only a 5.36 ERA in 48 2/3 innings in New York over the life of the deal.