I am not sure, but while you wait try looking at the horned poppy Glaucium? They are a bit more grey and possibly hairy though. Or Papaver rhoeas . I think there is also more than one Glaucium type. I have had a "poppy" with a similar leaf given me years ago looks like yours when it was young sorry cannot remember what it was, but that is why Glaucium sprang to mind.
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I have had a "poppy" with a similar leaf given me years ago looks like yours when it was young sorry cannot remember what it was, but that is why Glaucium sprang to mind.
That would be yellow too