How damaging is Oxford's transfer embargo?

[BBC][Getty Images]Oxford United's plans for the new League One season have suffered a major setback with the club being placed under a transfer embargo by the English Football League.The U's, who were relegated from the Championship at the end of last season, will not be able to register new players in the current window because they are not compliant with the EFL's salary cost management protocol (SCMP) regulations.How much damage will this do to Oxford's hopes of an immediate return to the Ch