they could replace it with 3 contracts that cost 300 gold, and each passively give you jungle clear speed as well and another bonus suited to different styles of jungler. This would give you starting item choices, as well as not locking you into any kind of tier 3 item which does not suit your hero.
just as example:
Warrior Contract for jungler’s who intend to gank between rotations menacing different lanes.
passive: monster hunter (unique clear speed passive)
passive: Gain one stack each time you kill a jungle monster. Max of 8 stacks.
active: consume all stacks, your next basic attack deal 10 bonus true damage and slows it’s target by 2% for each stack consumed. 12 second cooldown.
Growth Contract for passive farming jungler who wan’t to maximize gold on rotations, at the cost of slower rotation speed.
passive: monster hunter
passive: 10 seconds after you kill a treant, a sprout appears on that location. Heroes who walk over the sprout within 3 seconds consume it gaining 15 gold and 2 xp.
Marauders Contract for junglers who intend to invade and contest jungle camps especially while enemies are nearby.
passive: monster hunter
active: fire a projectile in the target direction damaging the first jungle monster it hits dealing damage equal to 15% of its max HP. If this kills its target release a blast which deals 80 crystal damage to nearby enemies. This has 2 charges. 5 seconds cooldown, 25 second charge time.