Six with experience in both campsLeft-back Scott Malone will hope to feature against former employers Bournemouth when Millwall travel to the Goldsands Stadium on Saturday.
Malone, 22, arrived at The Den from The Cherries back in May 2012, having made 37 appearances on the south coast and scoring six goals in the process.
Keeper David Forde, called up for the Republic of Ireland's World Cup Qualifying double header later this month, has also played for the Championship newcomers.
Then with Cardiff City, the 33-year-old was loaned to Bournemouth in the tail end of the 2007/8 campaign, keeping a clean sheet against Millwall in his sixth game for the club. Fordey went on to make 11 appearances for The Cherries.
One man who won't be involved at the Goldsands Stadium on Saturday, however, is Liam Feeney. The Millwall winger was recently loaned to Bolton Wanderers, denying him the opportunity to face his former side for whom he made 121 appearances between 2009 and August 2011, before signing for The Lions.
For Saturday's hosts, ex-Millwall forward Lewis Grabban looks likely to lead the line and goes into the game as the club's leading scorer with six goals to his name so far this season. Grabban, now 25, spent two and a half years with The Lions after signing from Motherwell in January 2008, and scored 11 goals in 70 appearances whilst at The Den. He joined Bournemouth in May 2012 after three separate loan spells with Brentford and a permanent stint with Rotherham.
Cherries boss Eddie Howe, however, is unable to call upon keeper Ryan Allsop after he was dismissed in Tuesday's defeat away to Leeds United. Allsop, 21, signed for Millwall in May 2011 but failed to make a first team appearance for the club before his release in April 2012.
The final former Lion in Bournemouth's ranks is striker Josh McQuoid, who is yet to make an appearance this season after sustaining a knee injury in pre-season.