Certainly. I came here to answer that question specifically and it's a big disapointment they dont.
It kind of makes sense that they don't, at least to me. If they could carry over you could pay the minimum for 4 seasons and then get the same information as if you paid the maximum.
Also, from a realism point of view, there is no way your scouts can be looking 2-3 seasons into the future.
Run of the Mill Canadian Manager