Ole Gunnar Solskjaer knows that he faces a major rebuilding job as he attempts to strengthen a Manchester United side that exited the Champions League on Tuesday.
United slumped to a comprehensive 3-0 defeat to Barcelona at the Nou Camp in the second leg of their quarter-final clash as they suffered a 4-0 aggregate defeat to the La Liga leaders.
Lionel Messi scored twice before Philippe Coutinho added a superb third goal in the 61st minute for a Barcelona side that are now 15/8 to win the Champions League outright.
In contrast United are struggling to secure a top-four spot in the Premier League and may miss out on a place in the Champions League for the third time in six seasons.
The likes of Juan Mata, Marcos Rojo and Antonio Valencia could all leave Old Trafford this summer, although Solskjaer has suggested there may be more departures.
The Norwegian said: "We did well to get here [the quarter-finals] and you could see the difference between the two teams.
"We know there's work to be done. I've said all along this isn't going to change overnight and the next few years are going to be massive for us to get to the level where Barcelona and other teams are at the moment.
"We've done really, really well to get to the quarters and challenge for the top four. So we've got a rebuilding job but it starts with the coaches and players, and of course one or two additions to the squad will happen in the summer."
United, 11/4 to finish in the top four, are 6/5 to beat Everton at Goodison Park this weekend.