Celtic's latest signing of Erik Sviatchenko has an indirect impact on Manchester United.
United face Danish team FC Midtjylland next month, where Sviatchenko had been club captain.
He had been a vital part of their campaign to date, and Celtic have done well to lure the international defender away now, with the carrot of a huge tie with Manchester United on the horizon.
How much of a boost it is for United depends on how they treat the ties.
They could play the youngsters and fringe players, and not care if they are eliminated, but this may be an error.
The prize for the winner of the Europa League is not just a trophy, it is a Champions League place for next season, and this could be an extra insurance for the Red Devils, who currently sit outside the top four.