Jamie Redknapp is currently preparing to welcome his third child, and first with girlfriend Frida Andersson. But on Tuesday, the former footballer took to Instagram to share his pride in one of his sons, Charley, 16, as he played in a rugby match.MORE: Jamie Redknapp's fun-filled home to raise first child with girlfriend Frida AnderssonThe teenager was competing in a match for the Epsom College Rugby Football Club.WATCH: Louise Redknapp shares video of son finding out she was on The Masked Dancer"So proud of my boys this week," Jamie wrote alongside the image which saw Charley running with the ball."Charley, great job playing against some of the best rugby schools in the country."The teen's mum, Louise Redknapp, shared the same image over.