Mirotic has decided to sign a contract with Barcelona of the EuroLeague, Shams Charania of The Athletic reports.
Mirotic missed all four of his field-goal attempts, adding just two rebounds in nine minutes during Thursday's 105-99 loss to the Raptors.
Mirotic will come off the bench in Thursday's Game 5 against the Raptors.
Mirotic totaled 11 points (4-10 FG, 2-8 3Pt, 1-2 FT), two assists, one rebound and one steal over 25 minutes in the Bucks' loss to the Raptors on Tuesday.
Mirotic tallied 15 points (5-10 FG, 2-7 3Pt, 3-4 FT), and six rebounds in 23 minutes during Friday's 125-103 victory over Toronto.
Mirotic will remain in the starting lineup for Wednesday's Game 1 against Toronto, TNT's Kristen Ledlow reports.
Mirotic totaled 10 points (3-10 FG, 2-8 3Pt, 2-2 FT), 11 rebounds, three assists, two steals and a block across 28 minutes in the Bucks' series-clinching win over the Celtics on Wednesday.
Mirotic will remain in the starting lineup for Friday's Game 3 against the Celtics, Malika Andrews of ESPN reports.
Mirotic will join the starting lineup for Tuesday's Game 2 against the Celtics, Eric Nehm of The Athletic reports.
Mirotic finished with 13 points (5-9 FG, 3-4 3Pt) and four rebounds over 21 minutes in the Bucks' loss to the Celtics on Sunday.