Two veteran heavyweights will meet again at UFC Fight Night San Antonio in July.
The rematch is 11 years in the making. Arlovski knocked out Rothwell at Affliction: Banned, the promotion's first event, back in July 2008.
Arlovski (27-18, 2 NC) is winless in his past four fights. He most recently dropped a split decision to Augusto Sakai last month.
Rothwell (36-11) has lost two in a row. He fell to Blagoy Ivanov via unanimous decision in March.
The UFC has yet to announce a main event for the card, which will take place at AT&T Center.