Gustavo Hamer has completed a sensational return to the Sky Blues. Gustavo Hamer has completed a sensational return to the Sky Blues. GUSTAVO Hamer has completed a sensational return to Coventry City after the Sky Blues re-signed the midfielder from Sheffield United. The 29-year-old arrives for a reported £6million fee and has signed a long-term contract with the Sky Blues. The Brazilian has now returned to the Sky Blues and will want to play his part as Coventry embark on their first top-flight campaign for 25 years.