 Vertonghen stated on numerous occasions late in the 2010–11 season that he was considering leaving Ajax at the end of that season.In May 2011, Frank de Boer confirmed Manchester City boss Roberto Mancini was present at the 2011 KNVB Cup Final held on 7 May 2011, where Vertonghen's side lost 3–2 to Twente.Mancini was reportedly scouting Vertonghen to strengthen his side after they had qualified for the UEFA Champions League 2011–12 campaign.