England caretaker manager Gareth Southgate faces a major task in maintaining his unbeaten start at the Three Lions helm on Tuesday as 2010 world champions Spain make their way to Wembley Stadium.
After the trials and tribulations of his side's recent 2018 World Cup qualification schedule, a midweek friendly against one of Europe's powerhouses doesn't offer Southgate much respite in the interim role.
Despite winning two games and drawing one in World Cup qualification, a friendly meeting with La Furia Roja could be the England chief's greatest test in whether he can secure the position permanently.
Meanwhile, Spain manager Julen Lopetegui is also unbeaten since taking over the national team in July, and two of Europe's less experienced international managers face a challenge in proving their credentials with a friendly win.