Complex sentence: On 17 May 2016, aged only 19, he was called up to the full squad for an international friendly against Bosnia and Herzegovina; twelve days later he came on in the 3--1 win in Switzerland as a substitute for goalscorer Nolito.
Split into simpler sentences: On 17 May 2016, aged only 19, he was called up to the full squad for an international friendly against Bosnia and Herzegovina. Twelve days later, he came on in the 3--1 win in Switzerland as a substitute for goalscorer Nolito.