FTSE edges higher with help from HSBC and Sports Direct

* Blue-chip FTSE 100 index up 0.2 percent

* Sports Direct, HSBC up on broker comments

* Aveva surges as Schneider buys in reverse takeover (Updates price, detail)

By Liisa Tuhkanen and Atul Prakash

LONDON, July 20 (Reuters) - Britain's top share index rose on Monday, boosted by the reopening of banks in Greece and positive broker comments about HSBC and Sports Direct .

The blue-chip FTSE 100 index was up 0.2 percent at 6,785.54 points by 1357 GMT after falling in the previous session.

Shares (Frankfurt: DI6.F - news) in HSBC rose 1 percent to 586 pence, adding the most points to the FTSE 100 index, after Citigroup (NYSE: C - news) raised its rating on the stock to "buy" from "neutral" and increased its price target to 635 pence from 625 pence.

"Citi's upgrade is benefiting HSBC. Despite its exposure to the Asian market, HSBC remains well capitalised and financially robust and is looking to streamline its operations wherever possible," Richard Hunter, head of equities at Hargreaves Lansdown, said.

"Some stabilisation in Greece has also helped market sentiment. If we don't hear any bad news from Greece in the next couple of days, investors will turn back to fundamentals such as quarterly earnings," he added.

Greeks banks reopened three weeks after closing to stop the system collapsing, the first cautious sign of a return to normal after a deal to start talks on a new package of bailout reforms.

Also on the upside, Sports Direct shares climbed 2.7 percent after Exane BNP Paribas raised it target price for the sporting goods retailer's stock to 860 pence from 800 pence.

In other gainers, Rolls-Royce rose 0.4 percent after the British engineering company, under pressure after successive profit warnings, said its aero engine business won two new contracts totalling $2.23 billion.

But miners were knocked back after gold plunged 4 percent to its lowest level in more than five years as bullion's safe-have status took a knock from mounting expectations of a U.S. rate hike.

Blue-chip gold producers Randgold Resources and Fresnillo (Other OTC: FNLPF - news) fell 5.7 and 4.9 percent respectively, while mid-cap miners Lonmin (LSE: LMI.L - news) , Centamin (Toronto: CEE.TO - news) and Acacia tumbled between 10.3 and 6.5 percent.

"Given where gold is going, I think that sector's going to suffer quite a lot," Numis Securities analyst Cailey Barker said.

Aveva was the biggest FTSE 250 gainer, surging nearly 29 percent after France's Schneider Electric (Swiss: SNE.SW - news) said it would combine its software unit with the British company in a reverse takeover designed to create a global leader in industrial software.

Among other mid-caps, online takeaway ordering service Just Eat added 4 percent on top of a near 9 percent advance seen last week after bullish commentary from brokers. (Editing by Alison Williams)