Literally, the difference between Aish and Seedsman is their draft pick and age- but to to a lesser degree. Potential; Seedsman isn't going to be a great, whilst Aish is a "top 10 pick" so he will be preserved more with and could end up being a 200 gamer.
If Seedsman was a top 10 pick, we would be asking for a straight swap for Aish.
So your original drafted number is crucial for a couple years after your first year.
But I willing would give up Seedsman and 2nd round pick for Aish.