European stocks are expected to open mixed

European stocks are expected to open mixed on Tuesday amid cautious trade in Asia.

Elsewhere in Asia, China mainland markets traded higher. Data released Tuesday showed that April's consumer price index was up 2.3 percent year-on-year, slight less than expected. The producer price index fell 3.4 percent from the same period last year, a smaller decline than was expected. The numbers come after disappointing China trade data on Sunday.

Oil markets are also in focus. Fires in Alberta no longer threatens the complex Oil Sands.

Тhe Eurogroup of euro zone finance ministers, which met on Monday, has offered to grant Greece debt relief by giving it longer grace periods and bond maturities from 2018 if the country delivers by then on all reforms agreed under its latest bailout, Reuters reported.

In Turkey, Erdogan removed one by one the major figures who defended balanced budgets, controlling inflation and financial stability and whose policies led to an average growth rate of + 5% over the past 13 years. According to Bloomberg, Moody's and Fitch already give Turkey its low scores on the investment climate.

Earnings are due from Credit Suisse, EDF, Munich Re, Unicredit, easyJet and Thyssenkrupp.