SWANSEA manager Russell Martin believes Joel Piroe has the mentality needed to score goals in the Championship.The 22-year-old Dutch forward scored his 18th goal of the season to sink Millwall at The Den in midweek, and Martin has been impressed.He said: “If you wanted it to fall to anyone, it is him. He is so clinical with both feet – he is a great technician.“But the most important thing he has is the right mentality when he gets around the goal.“He shows composure, he is calm, and he just focuses on his technique, something that all top strikers pos...