At international level he represented both the Yugoslavian and Croatian national sides.
[1] Born in Osijek, Austria-Hungary and nicknamed Lembika,[2] he spent his early career with Slavija Osijek and BSK Belgrade; while playing with the latter he won 3 Yugoslav titles and graduated from law school.
[2] In 1941 he and teammate Ernest Dubac joined Građanski Zagreb.
[2] Lechner made his debut for Yugoslavia in an August 1931 friendly match against Czechoslovakia and earned a total of 44 caps scoring no goals.
[3] After retiring as a player in 1949, Lechner became a coach and managed Metalac Osijek, Dinamo Pančevo, Vojvodina Novi Sad, Dinamo Zagreb, Velež Mostar, Slavonija Požega and NK Zagreb.