Aston Villa great Paul McGrath says Chelsea need a top four finish if they want to improve their squad this summer.
Chelsea need a win at Villa Park today to be sure of Champions League qualification.
McGrath wrote for the Sunday World: "You may be sure that when he arrived at Stamford Bridge in January, the German was given the short-term job of 'get us into the Champions League next season' and the long-term one of, 'there will be money to rebuild as you see fit'.
"If Tuchel wants to attract the very best footballers to West London for next season, he has to be able to offer them Champions League football in 2021/22.
"That's why winning today, or next Saturday night, is such a big issue.
"Just as I have said about Manchester United, Chelsea know they are three or four top players away from closing the gap to Manchester City.
"They need those top players and they don't need to be playing in the Europa League every Thursday either if they are to get them."
