Both players received lengthy medical treatment following the collision before Collins was given his marching orders.
Collins will now miss his side’s Heineken Champions Cup matches against Benetton and Lyon. He is free to play again for the Saints on January 21.
“The panel found that the player’s actions were reckless in that he failed in his duty to protect the player in the air,” said independent panel chair Matthew Weaver following Wednesday’s disciplinary hearing.
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“They accepted that there was no intent to cause any harm and the player was immediately remorseful for the injury sustained by Jacob Umaga.
“The panel found that this was a low-end entry point of four weeks and that the player was allowed the maximum mitigation of 50 per cent due to his acceptance of the charge, his clean record and immediate and genuine remorse.”
– Press Association
WATCH: RugbyPass have made something truly special with the Barbarians rugby team – the release date is Sunday, January 12
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