Goldman Sachs Group Inc analysts led by Marcelo Aguiar said in a note Friday that plans by Brazilian steelmaker Usiminas to renegotiate terms on 254 million reais ($126 million) of local debt raise worries over profitability this year. Aguiar and his team reiterated a "Sell" recommendation on the shares, saying the plan to renegotiate the so-called debt covenants will create a short term pressure on company shares.