Calvin Stengs has returned to AZ this summer, as reported by Voetbal International. The 27-year-old right-winger had a special relationship with trainer Leeroy Echteld, who had been in his care in the youth team at AZ. Stengs is full of praise for Echteld, describing him as an "honest and clear man" who always speaks his mind. He also appreciates Echteld's ability to create a confrontational atmosphere on training sessions, which he believes helps to build resistance in duels. "As a player, you want to go through fire for this trainer," Stengs says. "That's his greatest quality. He's a people person." Echteld had a significant role in Stengs' transfer back to AZ, where he had first started his career.