The 2010 Collingwood premiership player was set to start with Melbourne on Monday, but fronted up for Friday’s training session at Gosch’s Paddock.
Lumumba looked sharp as he joined in with his new teammates.
The 199-gamer crossed from Collingwood during the October trade period.
The 2010 All-Australian finished fourth in Collingwood’s best and fairest in 2014.
Lumumba looms an integral part of Melbourne’s prospects next year and in the coming seasons.
EXCLUSIVE pictures by Melbourne Football Club, Matt Goodrope
