Oldham winger Cristian Montano has undergone surgery to have a cyst drained, manager Lee Johnson has revealed.

Montano is now an early doubt for Latics' clash with Crawley next weekend, as is defender Genseric Kusunga who missed the 1-1 draw with Crewe with a tight hamstring.

On Montano, Johnson said: "We have yet to speak to the surgeon to see when he will be available."