 Nyorai kuenderera mberi kweiyi ndima - Castaignos airatidzwa mumwaka wese wekutanga, kunyanya achihwina chinangwa chekutanga mumutambo wehushamwari neCeltic musi wa30 Chikunguru 2011. Akaita mutambo wake wekutanga weInter Milan muSupercoppa Italiana, achitamba panzvimbo yaJoel Obi mukurasikirwa ne21 kurwisa Milan, uye akatamba pamberi pevanhu zviuru makumi manomwe paBeijing National Stadium, Beijing China PR. Zvisinei, Castaignos akadonhedzwa zvine nharo kubva muEFAFA Champions League squad. Izvi zvakaita kuti sachigaro wekirabhu Massimo Moratti ataure nezvemamiriro ezvinhu pamutambi, achiti: Ndakanzwira tsitsi Castaignos nekuti munhu mukuru, kana nyaya iyi ikauya aizomutamba. Zvakaipa chaizvo, asi hazvina kuita sokuti warova mumwe munhu. Tinongofanira kudzivisa zvinhu izvi. Pasinei netarisiro dzokuiswa kwake muchikwata chemutambo, Castaignos akaramba ari kunze kwechikwata. Akaita mutambo wake wekutanga weligi, achitanga mutambo asati atsiva muhafu yenguva, mukurasikirwa ne3 × 1 kurwisa Novara musi wa20 Gunyana 2011. Castaignos akabva arova chibodzwa chake chekutanga muSerie A mumutambo wekunze kuSiena musi wa27 Mbudzi 2011, achibata bhora raThiago Motta asati apfura pasi akapfuura Brkić, uyo akazove mukundi wemutambo. Zvisinei, Castaignos akawana mikana yake yekutanga timu yakaganhurirwa, nekuda kwemakwikwi munzvimbo dzevarwi. 