Fearless Greg Lemond said:
The bike sponsor made him hire Di Luca iirc.
No. Di Luca is big friends with the bosses of Farnese Vini (now Vini Fantini) (abbruzzese company like Di Luca) and they told Scinto they'd stop sponsoring if he didn't let Di Luca ride.
In 2009 Farnese Vini signed deal to become second sponsor at Lampre the next season. Right after the Giro 2009 (before Di Luca's positive sera tests) Di Luca signed a huge deal to ride for Lampre-Farnese Vini the next season. That deal fell in the water after the positive.
IN 2013 during the giro the fluo team also had the acqua e sapone bubbles on their shirt. They are also friends of Di Luca who brought some extra money in to see him ride the Giro.