Logan spent three years - partly ruined by injury - with Hull before joining Souths. "I had an offer to carry on in the NRL, but I think I'm a better player now and I want to go back and be successful in the Super League with Wigan," the 29-year-old prop said.
Logan played for Scotland in the 2000 World Cup, has a British passport and will not count on the club's overseas quota.
The present Wigan side still needs to amass some points this season before the threat of relegation is completely averted and it will not be easy for them tonight against an in-form Warrington side.
Danny Orr is back in Wigan's squad, while Brian Carney hopes to return from his hamstring tear in two weeks rather than the five-week or six-week recovery that was originally estimated.
The Wolves are without Lee Briers - who damaged a thigh during the one-point win over Widnes last Sunday - and Mark Hilton, who strained his back in training.
Today's other match provides a glimpse of what Super League will be like in Perpignan, whose club, Les Catalans, come into the competition next season. The London Broncos take their game against Leeds there as part of their annual exile from Griffin Park.
"We have been over here before and we are very familiar with the surroundings," their coach, Tony Rea, said. "We know the pitch and the conditions and are looking forward to the game. It's a great stadium and should be a good atmosphere. We like it and it's good to be here."
They will face Matt Diskin, making his first appearance of the season, but not Kevin Sinfield, who misses his first game following surgery on his dislocated thumb.
"Kevin's absence gives other players the opportunity to lead the side," the Leeds coach Tony Smith said.
Wakefield, who are at home to Bradford tomorrow, have signed the former Huddersfield utility back, Steve Booth.
Booth has been in rugby union, mainly with Leicester and Bath, for the past five years and has returned to league for the rest of this season. He is the first signing made by Trinity's caretaker coach, Tony Smith.
Bradford have Leon Pryce back after suspension but he is almost certainly on his way to StHelens for next season.
Leigh, meanwhile, will take another step towards the inevitability of relegation back to National League One if they lose at Huddersfield in tomorrow's other match.
In that division, James Webster will continue his caretaker duties at Featherstone with Hull KR, who appointed Justin Morgan as coach this week but will have to wait until he finishes his stint with Toulouse before they can have his full attention.
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