Bayern Munich keeper Jonas Urbig celebrated his first Bundesliga title on Sunday with his team sitting eight points clear at the top with two games left to play.
But the 21-year-old, who is first choice at Bayern with Manuel Neuer injured, could end up collecting a second title with second-tier club Cologne.
Urbig made 10 appearances for them this season before his January transfer to Bayern. Cologne are second in the standings, a point behind leaders Hamburg SV with two matches remaining.
"I am in very good contact with the lads and I would be extremely happy if Cologne win the second division title," Urbig said.
Only two players have previously achieved this feat, Pasi Rautiainen with Bayern Munich and Werder Bremen in the 1980/81 season and Frank Hartmann in 1986/87, with Bayern Munich and Hannover 96.