No Komarov in top lines. He is far better as a player than those on 3rd line etc yes - but he can't score at this level as often as is needed as he is a born bottom 6 player. Salminen for the first line instead.
Also I think Jalonen will call up one of Tuppurainen, Donskoi and Palola for the team, and consider Hirsovits a lock before Konna these days.
Salminen these days is almost as inseparable part with Immonen as Kontiola and Aaltonen used to be. They're gonna be in the same line in these games. Should there be a need to find more offensive-minded player for that top unit, Palola is indeed a good, solid option.
Korpikoski-Barkov-Palola
J.Jokinen-Immonen-Aaltonen
Salminen-Kemppainen-Donskoi
Hartikainen-Koskiranta-Komarov
Heh, you can tell somebody's a Kärppä fan. Sticking to Kemppainen-Donskoi, but splitting up the Torpedo duo who are far more prominent.
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Also, there is a player's status to contend. If we have plenty of high-profile grinders available, it will be difficult for the management to cut them like that, and some will have to be shoehorned into the upper lines. I don't like it, but that's reality.
Following forwards will likely be available once the NHL's regular season ends: Barkov, J.Jokinen, Komarov, Korpikoski and Ruutu. If all of them are willing to come, Jalonen won't say "no" to any of them.
For centermen, Barkov and Immonen will be 1-2 in that case. For #3, the options are Koskiranta, Kemppainen and Hirschovits. For #4, Koskiranta and Kemppainen remain as options, but one can replace Hirso with Wirtanen.
Ultimately, I think it's going to lead into something like this, when we take existing chemistry into consideration:
Ruutu - Barkov - Jokinen
Salminen - Immonen - Osala
Korpikoski - Koskiranta - Aaltonen
Komarov - Wirtanen - Hartikainen
+Kemppainen, Donskoi/Palola
Does Ruutu deserve to be on the top line? No, but his status does not mean he will be completely off the team and his familiarity with Jokinen will slot him there.
On defense, I have to agree with JJTT's machinations. I'd say though that Jokipakka could feature in bottom-four, but not automatically.
For goalies, I'd say Helenius and Säteri are also options if nothing arrives from overseas. Otherwise, NHLer-Koskinen will make up the playing tandem and Saros makes an opportune reserve guy.