Brisbane Broncos prop Corey Jensen is set to announce his medical retirement following a frightening battle with blood clot issues in his lungs.

Jensen last featured in the NRL in Round 7, when the premiers defeated the Wests Tigers, with Jensen falling unwell following full-time, suffering a pulmonary embolism.

After seeing specialists and consulting with Broncos doctors in the past months, the Courier Mail is revealing Jensen will hang up the boots on medical grounds.

Broncos forward outlines positional plans for 2023
SYDNEY, AUSTRALIA - AUGUST 04: Corey Jensen of the Broncos looks on during the round 21 NRL match between the Sydney Roosters and the Brisbane Broncos at the Sydney Cricket Ground on August 04, 2022, in Sydney, Australia. (Photo by Cameron Spencer/Getty Images)

The 32-year-old started in the front row for the Broncos' historic drought-breaking title win last season and was hopeful of overcoming the issue and returning to the field.

Jensen underwent blood-thinning medication and a barrage of tests to determine if a return timeline was possible.

But instead, he has opted to medically retire after nine years in the top grade.

Coach Michael Maguire only two weeks ago admitted he hopes to see Jensen back out onto the field.

“I really hope he plays again,” he said to the publication.

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“This has been a really unusual situation; I don't think I've ever heard of a player having blood clots.

“I'm sure we will work through his playing part of it and see where it goes.

“We are all praying he will be alright.”

Jensen played 153 NRL games at a constant high level, making his NRL debut with the North Queensland Cowboys in 2017, then featuring in the club's grand final campaign later in the year before making the switch to Brisbane in 2022.

The hardworking prop only signed a two-year extension in September last year, but will bring the curtain down just under a year later.

A formal announcement is set to be made at Broncos headquarters on Thursday morning.