Koeman has told BBC Sport that it is unrealistic to expect Everton to claim a Champions League place.
The Merseyside outfit signed a number of players in the summer transfer window, including Wayne Rooney, Jordan Pickford and Davy Klaassen.
The Toffees, though, have not made a good start to the 2017-18 Premier League campaign and are 18th in standings at the moment.
Everton have managed to pick up just four points from five league matches so far this season and were hammered 4-0 by Manchester United away from home at Old Trafford in the Premier League.
Townsend has given his take on whether the Toffees can finish in the top four of the Premier League this season, suggesting that the situations at Tottenham Hotspur and Arsenal could open the door for them.
“I am surprised he said that,” Townsend told Sky Sports about Koeman’s comments. “I totally get his reasons for saying that because of the might of the teams that are above them at the moment.
“But Spurs being at Wembley this year it’s a different time for them. Arsenal being Arsenal, they are under pressure.
"There’s going to be a change there, you would have thought, at some time in the not-too-distant future. There is a possibility, I think."
Everton have a good squad and have some wonderful players, and they should at least be pushing for a top-six finish in the Premier League this season.
Ending up seventh once again like last season would not be a failure for the Toffees, but they should at least give the likes of Tottenham, Arsenal and Liverpool a run for their money in terms of claiming a Champions League place.