Following eight consecutive seasons as Liverpool's first-choice keeper, Reina spent the 2013–14 season on loan at Napoli, where he was reunited with Rafael Benítez, the coach who signed him to play for Liverpool in 2005. During his loan tenure in Naples, Reina was part of the side that won the Coppa Italia in 2014. Reina then completed a permanent move to Bayern Munich in 2014, where he was the second-choice keeper for behind Manuel Neuer. Reina returned to Napoli on a permanent deal in 2015, where he remained until 2018 when he signed for Milan. In January 2020, he completed a loan move to Aston Villa, before returning to Serie A with Lazio in August 2020.