Centre Iain Thornley and forward Tom Spencer have signed full-time deals at Leigh following their elevation to Super League.
The pair had previously combined playing for the Centurions with their respective careers away from rugby.
Coach John Duffy said: “Iain and Tom are two players who have been fantastic for me and I am really pleased they are going full-time.
“It speaks volumes about them that they are willing to take this opportunity and give their all for the Leigh Centurions in 2021. I am very pleased they have both been able to secure full-time deals because they are two players who have been on the same journey as me since I came to the Club.”
Thornley won the Super League title with Wigan in 2013, as well as a Challenge Cup final, while Spencer is in his second stint with Leigh, making more than 100 appearances.