He is a candidate for selection in Friday's game with the Crusaders in Christchurch and has a proven try-scoring record.
Solomona, 28, will play the remainder of the campaign as a replacement player for the Highlanders before joining North Harbour in the Bunnings Cup.
Highlanders assistant coach Riki Flutey, also a former England Test player, said, "When we saw the opportunity we grabbed it, Because guys like him coming back, wanting to give back to New Zealand rugby, it's massive for us," Flutey said.
"Denny has come into our environment over the last few weeks with lots of moving parts with injuries and Covid covers, and from day one he's been outstanding."
That was, especially, in his leadership parts of the game, in defence and the back three.
"His voice has been really valuable over the last few weeks," he said.
The Auckland-born, former Melbourne Storm NRL player joined the London Broncos in 2014 and Castleford in 2015-16 before switching to rugby for Sale from 2016-21, making 88 appearances and scoring 46 tries, and playing five games for England in 2017.
Flutey said the Highlanders know they have to convert opportunities they create, something that would be vital against the Crusaders.
"We're playing some good footy, but, at times, we're missing opportunities.
"I think around the reviews in these last couple of weeks, we really looked at simplifying our game, and also making each individual accountable to their roles and skill sets," he said.
Hooker Andrew Makalio said he was looking forward to playing against his former team.
"Our results aren't going our way but I have full trust in our boys because they have worked really hard and all we need to do now is work smarter. We can't control the results but we can control our skills and our performance," he said.
Makalio said his concentration was on getting around the park as much as possible and dominating collisions.
He said the side's set piece had been performing well but some tweaks were still needed to get 10 out of 10 from it.