The injuries were already there, but Pulkkinen has not been called up yet. I guess Holland prefers him to have a lot of TOI (including PP action) with the Griffins over 10 minutes with the Red Wings - he used the same reasoning with regard to Mrazek. Also both Andersson and Cleary have improved over their last season's performances; Babcocks trusts both a lot.
Pulkkinen's situation is very interesting in general as well. It seems to me that he is the current prospect with the steadiest and most thorough improvements, developing from a slap shot scoring phenomenon with questions about his skating and effort in Finland to an AHL top forward. Yet there are already two other smaller skilled forwards on the Red Wings roster in Nyquist and Tatar; unless Mantha develops worse than anybody expected, he might be another winger option after some AHL seasoning.
Right now, I expect Pulkinnen to be added to the Red Wings roster next season and to get ample TOI in 3rd line and PP action; unfortunately the usual injuries to the above-mentioned players alone will create an opening for him. However, Pulkkinen has evolved into a very attractive trade chip and seems to be more expendable for Detroit than other forwards...
Gruß,
BSHH