Who would you drop if you accepted the offer? Can you provide me with more details about your team? At first glance I'd be hesitant because Alffy doesn't have much left in him. Datsyuk is great (and my favorite player) but Spezza is that much younger.
I'm about to go to sleep so if you can reply with another message I should be able to answer your question.
Hey man, I don't mean to bug you a tonne, but I've been offered Datsyuk and Alfredsson for Spezza and my 1st round pick.... My team is in 1st, and I'd like to keep it that way. He may be convinced to add a forward better than Alfredsson, but I'm not sure if this is a lateral move.