Villarreal are in ‘serious, serious trouble’ with one La Liga expert baffled by the club’s decision to bring Eric Bailly back to La Liga only a few months after Premier League giants Manchester United terminated his contract. During the January transfer window, a club who appear to have lost sight of themselves – formerly a destination for Europe’s best young talents and now a retirement home for fading stars – seized the opportunity to put things right. Sevilla’s three January signings – and that includes Manchester United duo Hannibal Mejbri and Mateo Mejia – are all aged 21 or under. Compar…