"He's not in a very good position at the moment - we've given him a few days off," said Hammers boss David Moyes.

"I spoke with him yesterday and he was upset, which you can imagine. We just hope his family keep safe."

Russian President Vladimir Putin launched a military invasion of Ukraine in the early hours of Thursday morning.

Meanwhile, Manchester City boss Pep Guardiola said full-back Oleksandr Zinchenko has been affected by the invasion of his homeland, but will be available for selection if required against Everton on Saturday.

"It's a worry, what we feel with our country where we were born. Killing innocent people, how would you feel? I guess that's how he feels," said the Spaniard.

"Of course it's close to him. Of course he has our support. It happened in the country he was born, he loves, it's attacked from outside. He's tough and knows we are here."

Oleksandr Zinchenko (right) was among the crowd at the vigil in Manchester city centre

Zinchenko, 25, joined a vigil outside Manchester's Central Library on Thursday evening in support of his homeland.

The building in Manchester city centre was lit up in the blue and yellow colours of the Ukrainian flag in solidarity.

Zinchenko posted an image of the vigil on his Instagram page

with the caption: "No War! Pray for Ukraine."

If he features at Goodison Park on Saturday he could go up against international team-mate Vitaly Mykolenko, who joined Everton from Dynamo Kyiv in January.

Toffees boss Frank Lampard says he will speak to the 22-year-old full-back before making a decision over his selection.

"He is OK. I've spoken to him, the club have spoken to him. He has every bit of support we can possibly give him in terms of personal touch and club support if and when he needs it," said Lampard.

"Who knows how we can help him? It is ultra-important he feels that from us. The decision whether he plays or is available is for me and him to speak about."