Yes it is..
How so?
Hill's going great guns at the moment. Deledio has never been known to crack the 100pt mark consistently or anything, at best hes gonna avg 90pts for the year. so he's not going to go up over 360-370k for the year. i dont see how trading him away - which will free up heaps of cash, gain cash as a result of hill shooting up in price, also only score about 20 pts less than him per game - would be so bad. There aren't too many disadvantages.
It's a risk ofcourse, but a safe risk. And anyway, if you aren't going to take any risks in DT then you've got no chance of being ahead of the others.