Son Heung-min has not been able to the hit target for Tottenham recently, but he was lethal during military service.
Tottenham have allowed Son Heung-min and Steven Bergwijn to travel back to their home countries during the coronavirus pandemic.
Lucas Moura and Steven Bergwijn should not be expected to star up front, which they have "never learned how to do", says Jose Mourinho.
Harry Kane is recovering from injury quicker than expected and Jose Mourinho is optimistic he could still play a prominent role this season.
Tottenham's lack of attacking options following Son Heung-min's injury resulted in Jose Mourinho joking he might bring back Peter Crouch.
A fractured arm is likely to keep Son Heung-min out for the remainder of the 2019-20 season, Tottenham boss Jose Mourinho has said.
Son Heung-min faces a spell on the sidelines after breaking his arm in the win over Aston Villa last weekend.
Aston Villa were made to rue a late error as Tottenham won a barnstorming Premier League clash at Villa Park.
Tottenham recovered from 2-1 down to beat Southampton 3-2 in Wednesday's FA Cup fourth-round replay thanks to a couple of late goals.
Tottenham have Chelsea in their sights in the race for the top four and Son Heung-min urged Spurs to show no let-up.