But he injured his neck or back in a scary rollover crash during January's Race of Champions event in Miami, with Blick newspaper announcing on Thursday that he is still yet to get the green-light by doctors.
And news that Italian Giovinazzi - the 23-year-old GP2 runner-up - will definitely replace Wehrlein at the first test is now being reported by Italy's prestigious La Gazzetta dello Sport.
"Only official confirmation is pending," the newspaper said, "but the rumour has been confirmed.
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