Complex sentence: Controversy arose after a hard fought match in which Porto won 3-2 in extra time, where then Celtic manager Martin O'Neill criticised Micheľ's decision to send off Celtic defender Bobo Baldé for a second bookable offence.
Split into simpler sentences: Controversy arose after a hard fought match in which Porto won 3-2 in extra time. Micheľ was accused of poor officiating after sending off Celtic defender Bobo Baldé for a second bookable offence.