"There are clearly pension and economic reforms that need to be implemented and while Greece is on the path of avoiding an exit from the euro zone, frankly if it doesn't implement the changes that are much needed, maybe three, four years down the road we could be back in the position we were in a few months back," Randy Frederick, MD of trading and derivatives at Charles Schwab told CNBC on Monday.
One investor who knows all about investing in Greece is American billionaire Wilbur Ross. He was one of a group of investors who pumped 1.3 billion euros ($1.47 billion) into Greece's Eurobank Ergasias last year.
The bank has seen its share price plunge 80 percent this year against the backdrop of the Greek debt crisis that sparked a run on banks earlier this year.
Ross told CNBC in June that he was confident that his investment in the Greek bank would work out.
"Whether you think it makes sense to invest there (Greece) or not, if you've got a high-risk tolerance, maybe it is," said Charles Schwab's Frederick.