Arsenal goalkeeper Karl Hein has revealed the influence of Mart Poom on his career.
Hein arrived in the summer from Estonia and recently made his U18 debut.
He told the club's match programme: "Mart Poom was my coach at Nomme United and he is also the Estonian national team goalkeeping coach, so I worked a lot with him when I was with the under-17s.
"He taught me a tremendous amount and I'm sure that without him I would not have the opportunity that I have now here at Arsenal. He also gave me an insight into what to expect being with the Gunners and football in England, and that helped me a lot."