The BBC pundit used to play for both sides and is optimistic ahead of next term.
Indeed, the ex-midfielder once turned out for both Queens Park Rangers and West Ham United and took to Twitter in response to questions from followers with predictions ahead of next term on Friday night.
For QPR, Sinclair holds hope but not unrealistic hope. The BBC pundit doesn't necessarily see promotion but wants the R's to regroup and 'rekindle their DNA.' His overall verdict is - hopefully - top 10:
QPR aside, Sinclair went on to cast his view on West Ham, who face their first season under new manager Slaven Bilic - but their last ever at Upton Park.
For the Hammers, the 42-year-old is hoping for a top-eight finish and feels the club's hierarchy expect that kind of return if the east London side are to 'move forward.'
Do you agree with Sinclair's verdicts? Will QPR enjoy a much-needed solid season of stability in the Championship? And can West Ham make sure they finish inside the top 10 this time around?