The West Ham forward has been linked with something of a surprise move to Old Trafford in the summer transfer window.
Jose Mourinho was spotted watching the Austria international in their recent 1-0 win against Russia last week to fuel speculation about a potential move.
Arnautovic became West Ham’s record signing following his £25m move to the Hammers from Stoke City last summer.
The 29-year-old forward scored 11 goals and made six assists in his first Premier League campaign at the London Stadium.
Arnautovic worked with Mourinho for a brief spell at Serie A giants Inter Milan before he moved to Bundesliga outfit Werder Bremen.
The Austrain forward is recognised as a natural talent but his attitude and consistency have attracted criticism during spells at Stoke and West Ham.
However, former Hammers defender Pearce believes Arnautovic could be a hit at Manchester United if the east London side opt to sell their record signing.
“He has got the ability to be in the top four in this country without a doubt,” Pearce told talkSPORT. “It’s just whether West Ham want to sell him.”
West Ham are rumoured to be demanding a transfer fee in the region of £50m for Arnautovic, which would see the Hammers double their money.
The east London side managed to avoid relegation to the Championship thanks in part to Arnautovic’s goals.
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