Starboard has suggested a major change in leadership is needed, and that could include ousting Ms Mayer, who has cut staff and offloaded assets in a bid to turn around Yahoo. Starboard has also accused the company of taking too long to enter sales talks. Yahoo is laying off around 1,700 employees, or 15% of its workforce, under plans to save $400m (£282m) a year to help offset falling revenues. The firm has seen revenues continue to decline despite previous turnaround efforts since Ms Mayer took the top job three-and-a-half years ago. Her latest revival plans will also see the group look to sell some of Yahoo's patents, real estate and other assets - including Yahoo Games, Yahoo TV and some of its digital magazines - for up to $3bn (£2.1bn).Yahoo also plans to close offices in Dubai, Mexico City, Buenos Aires, Madrid and Milan.