Scottish midfielder Aaron Hickey was on target as Bologna earned a comfortable 3-0 win over a below-par Lazio in Serie A on Sunday.
Champions Inter Milan thrashed Bologna 6-1 at the San Siro on Saturday to return to the top of Serie A in style.
Arsenal have signed Bologna defender Takehiro Tomiyasu while right-back Hector Bellerin has left to join Real Betis on loan, the club announced.
Juventus climbed into the top four on the final day of the Serie A season to secure Champions League qualification after the club beat Bologna.
Atalanta thrashed 10-man Bologna 5-0 in Bergamo on Sunday to move into second place in Serie A and extend their unbeaten league run to seven games.
Borja Mayoral's first-half strike earned AS Roma a 1-0 win over Bologna on Sunday, ensuring Paulo Fonseca's side kept in touch with the top four in
Romelu Lukaku scored his 20th Serie A goal of the season to earn Inter Milan a 1-0 win at Bologna on Saturday.
AC Milan got back to winning ways in Serie A with a 2-1 victory at Bologna on Saturday.
Juventus got their Serie A title defence back on track with a hard-fought 2-0 home win over Bologna on Sunday.
Roma went on the rampage and blasted five first-half goals past a pitiful Bologna side on their way to a 5-1 away win in Serie A on Sunday.
Inter Milan wing back Achraf Hakimi bagged a brace after Romelu Lukaku had opened the scoring in a comfortable 3-1 win over Bologna in Serie A.
A goal from record signing Victor Osimhen and two late saves by goalkeeper David Ospina gave Napoli a 1-0 win over Bologna.
Luis Alberto set Lazio to a 2-1 win over Bologna with a superb solo effort in Serie A on Saturday after the visitors had a goal disallowed.
Irrepressible Sassuolo scored three goals in 13 minutes as they charged back from 3-1 down to win 4-3 at Bologna in their Serie A derby on Sunday.
AC Milan's veteran forward Zlatan Ibrahimovic scored twice and also missed an open goal to give his side a 2-0 win over Bologna.
Mihajlovic, 51, guided Bologna to a 12th-placed finish in the Italian top flight last season despite being treated for leukaemia.
Bologna raced to a two-goal lead in five minutes and were pulled back to 2-2 before a stoppage-time goal gave them a 3-2 win over Lecce.
Atalanta took their Serie A tally to 95 goals, the highest by any side in a single season for more than 60 years, when they beat Bologna 1-0.