Brenden Aaronson seems to be starting to turn a corner after a dismal 18 months after winning his starting spot back in Union Berlin’s side – and Leeds United target Mark McKenzie has praised him. Aaronson, 23, joined Leeds with his stock at an all-time high after impressing with Salzburg. A two-time Austrian champion, the USA star had impressed in the Champions League before his £25m Leeds move. But he struggled at Leeds, scoring one goal in 40 – his lack of physicality often cited. His form in the first half of the season at Union has not gone to plan either, failing to score or assist in hi…