Getty ImagesAditya GokhaleBarcelona to use 'Antoine Griezmann tactic' in bid to land Joao Felix permanently from Atletico MadridJoao FelixAntoine GriezmannBarcelonaAtletico MadridLaLigaTransfersBarcelona have a special trick up their sleeves as they look to sign Joao Felix from Atletico Madrid.Article continues belowArticle continues belowArticle continues belowBarca want to sign Felix permanentlyAtleti ready to sell at €70m-€80mBarcelona to reduce price with 'Griezmann tactic'Article continues below