Chelsea should look to frustrate their former manager Thomas Tuchel and pinch one of his targets before the transfer window closes. Chelsea‘s Premier League rivals Newcastle United are willing to sell Kieran Trippier this month for £12m and Bayern Munich are interested in him, according to Sky Germany. With the Blues having had so many problems in both full-back positions this season, though, they really should consider entering the fray for Trippier’s signature. Kieran Trippier can ease Chelsea’s full-back crisisReece James and Marc Cucurella are both sidelined, while the club have just allow…