Tesla, Inc. TSLA and CEO Elon Musk’s surprise offer to take the company private at $420 per share has been the most controversial story on Wall Street in the past week, but another analyst threw shade on Musk’s proposal. Vertical Group analyst Gordon Johnson on Wednesday reiterated his Sell rating and lowered his price target for Tesla from $93 to $88 per share. SourceSome downside is possible. $TSLA, Tesla, Inc. / D