By Tom Victor Manchester United don’t need to qualify for the Champions League in order to spend big this summer. But football finance expert Dr Dan Plumley has told Mirror Football that failing to qualify for European football’s premier club competition will no doubt impact on next season’s budgets – despite a £1.3bn investment from Sir Jim Ratclffe being announced in late December. After finishing third in the Premier League last season, Ten Hag’s side have found it tougher this term and currently sit outside of the spots that guarantee a place in next season’s competition – having finished …