A player of Simpson-Daniel's calibre, one of the most gifted and talented of his generation, was bound to attract attention from other parties and persuading the Stockton-on-Tees born flyer to remain at Kingsholm is a massive statement of intent.
Currently away on England Saxons duty and set to play against Italy A tomorrow afternoon at Sixways, he has been capped 10 times by England and would surely have won a hatful more but for unfortunate illness and injury at inopportune times.
28 year old Simpson-Daniel has spent his entire playing career to date at Kingsholm and is currently enjoying a testimonial campaign.
He made his debut as a teenager against Rotherham in 2001 and marked the occasion with a superb individual try.
Since then, he has delighted Gloucester supporters on numerous occasions with the quality and the commitment of his play.
He has gone on to make more than 200 appearances and scored more than 100 tries.
Head Coach Bryan Redpath told the club website that he's delighted that Simpson-Daniel has put pen to paper.
"It's great news. Sinbad is a huge part of what we are as a club and what we're hoping to achieve over the next few years."
"He's one of the most talented players that I've had the pleasure of working with and a true professional as well. He's a pleasure to work with."