Kammala jumlar da ke gaba: Antwi ya wakilci tawagar Ghana U20 a shekarar 2015. An zabi shi don
2015 Gasar Zakarun Afirka ta 20 a Senegal, daga baya ta lashe wasa daya a kan Mali a wasan karawa na uku. An kuma zaɓe shi a cikin 'yan wasan Ghana na farko don gasar cin kofin duniya ta FIFA U-20 ta 2015 a New Zealand, amma ba a yanke shi ba.