The right-back, who is expected to complete his move when the January transfer window opens, should slot into the role vacated by Danny Simpson’s toe injury.
The Magpies find themselves near the foot of the Premier League after defeats at Manchester United and Arsenal over the Christmas period, and the arrival of the France international should inject fresh legs into their season.
Debuchy will join Newcastle at a time when several key players, such as Steven Taylor, Yohan Cabaye and Hatem Ben Arfa, are missing through injury.
Here is a suggested lineup Debuchy, 27, could slot into this month.
The Holland international is enjoying another good season as the Newcastle No. 1. Still a little inconsistent with positioning to be considered a great, the 24-year-old is still learning his game and is an excellent shot-stopper.
The potential new signing from Lille has arrived at exactly the right moment with Danny Simpson out for several weeks through a broken toe. Debuchy likes to attack and play high up the field, but does have the ability to track back swiftly.
Perch can play across the backline but is currently being deployed in central defense with the Magpies in the absence of the suspended Mike Williamson. Not in his natural position, but Perch’s partnership with Fabricio Coloccini offers an opening for the 27-year-old while Steven Taylor recovers from a hamstring problem.
The Argentina international has endured a frustrating season and has been linked with a move to San Lorenzo in his native country. But the 30-year-old still has a role to play for Newcastle and his presence at the heart of the defense will be crucial.
Santon can play on either side of the Newcastle defense in a fullback role. The Italian was a crucial part of the team which pushed so hard for a Champions League spot last season.
Tiote has built his game around passing and tackling since joining Newcastle in 2010. The Ivory Coast international can be somewhat lax in discipline, however, accruing 30 yellow cards in 63 matches for Newcastle.
With Yohan Cabaye sidelined with a hernia problem for the last 10 matches, Sylvain Marveaux has stepped into the creative breach. Originally a winger, Marveaux can provide the telling pass from central midfield for which Cabaye is renowned.
Age 23, Anita is a defensive midfielder with a swift turn of pace which has impressed this season. The Holland international is still learning his trade but has shown enough since joining from Ajax in the summer to suggest he is a good signing.
Obertan has endured an inconsistent time at Newcastle since joining from Manchester United in 2011. But, at just 23, the Frenchman possesses great pace, and with a more direct approach, can worry opposition defences.
He may now find himself back in the limelight with Demba Ba reportedly off to pastures new. The striker possess all the ability of his former forward partner and must now take the opportunity gifted to him.
With Demba Ba seemingly off elsewhere in January, it’s time for local lad Shola Ameobi to get a first-team runout. The 31-year-old might not be so young these days but he can still prove to be a handful for opposition defenses.