The 46-year-old, who spent almost two decades playing first-class cricket for the Red Rose county, is available for his first outing this weekend after linking up with the Lavender Road side.
And he will be joined in the squad by former Derbyshire batsman Hassan Adnan who has recently been added to the ranks.
The pair will team up with returning absentees from today’s game against Horwich, including skipper Simon Booth who is looking forward to having more options available.
He said: “It is great to have Warren available because of the experience he will bring into the team.
“We have also got Hassan joining us who also played as a professional for Derbyshire.
“He is a friend of Adil Nisar’s (the former pro who rejoined in the summer) and is another welcome addition.”
The addition of both is pleasing for Booth who hopes their current league form will continue during the weekend double-header.
Farnworth currently sit third ahead of today’s home clash with Horwich and tomorrow’s trip to Kearsley.
But there is still a tinge of disappointment about a hat-trick of cup exits so early in the campaign.
Booth said: “We have been dumped out of the cups through no real fault of our own and that is frustrating.
“We had a bowl-out defeat to Prestwich in the National Knockout and then because we could not play on two dates in the Lancashire Knockout we were out which was harsh.
“Then, in the Hamer Cup, we lost a rain-affected game to Social Circle when we only scored 30.
“So it has been disappointing on that front but in the league we have done a lot better.
“Hopefully, we can kick on from this weekend with more players available.”