If Del Potro is really leaving Schnike then Jerzy is an obvious option to go heavy in for. They have gambled very heavily and lost on top juniors in the past with front-loaded deals that blew up when potential wasn't realized. This should be a no-brainer after the Bercy run.
"When a man is tired of London, he is tired of life"...Samuel Johnson 1777
"When a man is tired of Federer, he is tired of tennis"...stringertom 2014