Maybe the target is just someone who has proven to score goals in multiple leagues or has shown continuous improvement to their goals to game ratio year pn year who the club feel can put away the chances we create.
As opposed to a certain style and profile.
David, Gyokeres, Openda, Toney (to an extent) have all proven they can step up a level whether it be from Championship to Prem or from the Dutch League to the Bundesliga etc. - but aren't all necessarily the same type of forward.
Richarlison, when fit, scored 11 goals and managed 4 assists in just 14 starts as a striker last season in this system... And he's hardly prolific.