The Baggies have announced the club-record signing of Nigeria striker Brown Ideye from Dynamo Kiev
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Scotland's friendly against Nigeria on Wednesday night is understood to be the subject of a police investigation for match-fixing.
The National Crime Agency, which investigates serious and organised crime, is reported by the Daily Telegraph to have asked FIFA to issue an alert over attempts to fix the game at Craven Cottage.
No Scotland players are understood to be involved.
A Scottish FA spokesman told Press Association Sport: "We are liaising with the relevant authorities and will prepare for the match as normal."
Gordon Strachan will look to guide Scotland to their sixth game without defeat when they face Nigeria on May 28 after the Scottish Football Association confirmed the Craven Cottage friendly.
The governing body has announced the Dark Blues will face the Super Eagles in London at the home of Barclays Premier League side Fulham.
Italy and Nigeria shared the honours in a lively friendly at Craven Cottage on Monday night.
Giuseppe Rossi put Italy ahead early on but Nigeria hit back with two goals in five minutes before half-time, Bright Dike levelling before Newcastle's Shola Ameobi put the African Nations Cup champions ahead.
However, Sunderland forward Emanuele Giaccherini equalised for Italy in the 47th minute as the clash finished 2-2.
FT NGR 2-0 ETH: Nigeria qualify for the 2014 World Cup. This will be their 5th appearance, 2nd-most for CAF nations (Cameroon). #Nigeria
Nigeria coach Stephen Keshi has not given up hope of reaching the Confederations Cup semi-finals - despite tomorrow's daunting final Group B game against world and European champions Spain.
– Nigeria coach Stephen Keshi.
We can't wait to play them. Anything can happen. That's what makes this such a great game.
It doesn't matter who we are playing, as long as the boys do what we want them to do. We will just play our game.
To those asking, Ross Barkley's father is Nigerian. That's how he's eligible for #SuperEagles. But I doubt he'll suit up in green and white
Barkley started Everton's game away to Tottenham on Sunday and impressed in midfield.