The Magpies were dealt a double injury blow in the 1-0 home defeat to Borussia Dortmund in the Champions League on Wednesday, with both Alexander Isak and Jacob Murphy forced off either side of half time.
Isak was given the all-clear to return to Newcastle's starting lineup against his former club Dortmund after recovering from a groin problem, but the Swedish striker limped off inside the opening 15 minutes with a recurrence of the same injury.
Murphy, meanwhile, was withdrawn in the 65th minute after dislocating his shoulder just three-and-a-half minutes after coming on as substitute.
Both players are now facing spells on the sidelines, and Howe has suggested that Murphy is set for a longer period out compared to fellow attacker Isak.
Discussing the injuries sustained by Isak and Murphy at a press conference on Friday morning, Howe said: «Very different injuries, Alex has got a groin injury which we don't think is serious, but it's a reoccurrence of the one he suffered playing for Sweden so we need to assess that.
»He's have a scan today but we don't suspect that is going to be too bad.
«Jacob's is totally different it's dislocation of his shoulder. It's not clear what we're going to do. Jacob is going to see a specialist today for his shoulder. We'll know more on him later today.
»You can play with these injuries or the other side is he needs an operation and he'll be out for some time."
Howe added: «We are a bit light in attacking areas. We have a deeper squad this season, but if you get injuries in certain areas then suddenly you can look a bit
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