US STOCKS-Wall St set to open lower amid worries about Greece
* Weekly jobless claims rise unexpectedly
* Avago rises after agreeing to buy Broadcom for $37 bln
* Abercrombie & Fitch rises after positive forecast
* Futures down: Dow 60 pts, S&P 4.5 pts, Nasdaq 6 pts (Adds details, comment, updates prices)
By Tanya Agrawal
May 28 (Reuters) - Wall Street was set to open lower on Thursday on concerns about a Greek default and an unexpected rise in weekly jobless claims.
European officials downplayed talk that Greece and its lenders were drafting an agreement that would provide Athens much-needed debt relief.
Initial claims for state unemployment benefits rose by 7,000 to a seasonally adjusted 282,000 for the week ended May 23, the Labor Department said on Thursday. Economists on average had expected claims falling to 270,000.
World markets were also under pressure after investors in China said several major brokerages had tightened requirements on margin financing, triggering fears of further steps to reduce leverage in the red-hot market. Continuación...