Complex sentence: Unfortunately, the team's results worsened under Peireira and in April 2012, both Pereira and Costinha were fired, with Alves being reinstated as manager; Costinha reportedly contested the terms of his removal, claiming that his contract extended until June 2013.
Split into simpler sentences: Unfortunately, the team's results worsened under Peireira and in April 2012, both Pereira and Costinha were fired, with Alves being reinstated as manager. Costinha has reportedly contested the terms of his removal, claiming that his contract extended until June 2013.