With Arthur Masuaku injured the Peruvian could be an option.
Tottenham star is the latest to renew his contract.
Arsenal host Chelsea at the Emirates on Saturday afternoon.
Koeman has made it clear that Niasse will not feature in Everton's first team squad.
The Saints travel to the London Stadium on Sunday.
Newcastle take on Aston Villa in the Championship on Saturday evening.
Sunderland face Crystal Palace in the Premier League this weekend.
The Frenchman has been discussing the striker's current injury battle.
The Swedish defender has been in excellent form for Leeds United recently.
Middlesbrough will face Tottenham Hotspur in the Premier League this weekend.
Arsène Wenger will stick to his policy of picking David Ospina in the Champions League after the Colombian goalkeeper’s inspired display frustrated Paris Saint-Germain and ensured Arsenal emerged from the trickiest trip of the group with an encouraging point.
'People apparently were making bad choices to hang on to their job'
The former president of the European commission has hit back against criticism about his new role at Goldman Sachs by insisting he will act with integrity and discretion.