He said without the hint of a European interest rate cut or more details on a plan for Greece, the markets are likely to get hammered again. It's time to get a little more cautious, Cramer said, as he laid out his Friday game plan for next week's trading.On Tuesday, Cramer said he'll be watching the nightmare that's become Alcoa (AA), a stock whose estimates have become so low the company might just be able to meet them. For Thursday, it's Pepsico (PEP) that will have Cramer's ear. With worldwide growth and a 3.5% yield, Cramer said "I want in." The same did not hold true for Safeway (SWY), which reports Thursday. Cramer said this grocer is under attack from all fronts. Also on Thursday, JPMorgan Chase (JPM), a bank that needs to say something positive, like a dividend boost, to help it's ailing shares. Then there's Google (GOOG) a company under scrutiny for out of control spending and a loss of mindshare when compared to Facebook. Finally for Friday, Cramer said toymaker Mattel (MAT) might have some positive things to say about the holiday season. This one might make an interesting spec, he said. In other news, Cramer noted an investment survey hitting the street on Wednesday. He said any uptick in bearish sentiment will be good news, as it will imply there are fewer people left to sell.