By 90min Staff 90min rounds up the latest transfer news, rumours and gossip circulating around the world… Manchester United have made a “huge” bid to sign Paris Saint-Germain star Xavi Simons this summer as they seek to fend off competition from both Bayern Munich and Barcelona. (Gazzetta dello Sport – Italy) In the face of interest from both Arsenal and Man Utd, Crystal Palace will demand a fee of £70m to sell centre-back Marc Guehi. (Football Insider) Chelsea have failed with a bid of €35m (£29.3m) for Barcelona midfielder Fermin Lopez, who will only be sold if a club triggers his €400m (£…