Everton boss Martinez: We're getting Alcaraz at his peak
"Antolin is a very experienced footballer," Martinez told evertontv.
"He's someone that has been enjoying football in Belgium, he's had a spell in Portugal and very good experiences at international level with Paraguay.
"He comes in a perfect moment after three seasons in the Premier League.
"At his age, he is a commanding figure, a real leader within himself with really high standards."