"If Wayne's time is up at Everton, there's no reason why Rangers shouldn't put their name forward", Gray told talkSPORT host Jim White on Tuesday.
Wayne Rooney next club odds: Where could Everton star go?
"There's a growing expectation for Everton to compete more and more into the European places. the top quality player is the only player that we should be looking at".
The move, should it come to fruition, will bring an end Rooney's second spell at Goodison Park.
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The same publication also reports that Chelsea are closing in on a £30 million acquisition of Middlesbrough winger Adama Traore . Chelsea manager Antonio Conte has responded to reports that the Blues are keen on signing a Manchester United attacker.
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There are a bevy of independent drone companies involved in the pilot, including Fortem , AirMap , Zipline and Matternet . But with local and state governments on board, potential adversaries to drone experiments become champions.
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The world's finest: Messi and Cristiano despite what people may state, pretty much have their feet on the ground. With the final six days later, Zidane will be hopeful he is fully fit and firing against Liverpool .
Earlier this week Allardyce said he wanted England's and Manchester United's record goalscorer to see out the final year of his contract next season.
Rumours are circulating that Rooney's future depends on whether Allardyce stays as manager this summer, yet it seems his heart is already set on joining DC.
Indeed, it would appear there's a likely scenario wherein three different clubs will be paying Rooney's exorbitant wages next season.
DC United finished last in the Eastern Conference a year ago, scoring a co-MLS-low 31 goals while surrendering 60, losing out on goal-difference to Western Conference doormat Los Angeles Galaxy for the league basement.
Wayne Rooney of Everton arrives before the Premier League match between Huddersfield Town and Everton at the John Smith's Stadium on April 28, 2018 in Huddersfield, England.
The US transfer window opens in July. That source spotted United a 50 percent chance of acquiring the greatest scorer in English national team history.