Everton are hopeful Yerry Mina will be back in October after the centre-back suffered ankle ligament damage in the first game of the season.
Mina pulled up in the second half against Chelsea - a match in which one of his other fellow starting centre backs, Ben Godfrey, was stretchered off. Godfrey is expected to be out for around three months with a fractured fibula.
The prognosis is more optimistic for Mina, whose injury is expected to take eight weeks to recover from. Until then, Frank Lampard believes Everton can cover the absences of two centre backs following the arrival of Conor Coady.