Proschwitz has given himself a month to seal a Premier League future with Hull.
His agent Lars-Wilhelm Baumgarten said: "Nick knows he cannot demand to be picked because Hull are enjoying success.
"Nick scored in the Capital One Cup and has been getting goals for the reserves, so we are hoping he is close to getting picked.
"We will look at what happens over the next month after the international break.
"Perhaps we may have to look at a loan move."
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