Losing a world-class full-back without making a profit is already unfortunate - losing both is indeed careless. After officially confirming his departure from Anfield at the end of the season, the praise for Andy Robertson was very sincere and deserved.
But in short, another world-class player left Liverpool without the club receiving any financial benefits. First was Trent Alexander-Arnold (although Liverpool received an early release clause of 10 million Euros), now Robertson, not to mention Mohamed Salah.
Liverpool could have received a transfer fee from Tottenham for Robertson in January but decided not to do so. Since that transfer window closed, Robertson has only started twice in the Premier League - in the win against Sunderland and the draw at home with Spurs.

After 9 brilliantly successful seasons, the Scottish national team captain will leave the club when his contract expires this summer. He left as a true legend, playing an important role in the team's successes with 373 appearances" - Liverpool's homepage announced.
The price is only about 5 million pounds and if Robertson helps Liverpool win a Champions League spot next season, it would be a right decision. However, it is likely that Robertson will only come on as a substitute in the remaining 7 Premier League matches.
His regular position next season, no matter which club he joins, will not be a reserve player. Robertson is just 32 years old and will be a valuable asset for any team that can have his services.
If there is any evidence that Milos Kerkez is an upgrade compared to Robertson, it is still not clearly shown. And the possibility that he develops leadership qualities like Robertson is very low.
In terms of role as a connecting factor and spiritual symbol, Virgil van Dijk is becoming increasingly isolated. No one has created better solidarity than Robertson at Anfield in the past 9 seasons.
A series of old and current teammates, along with important figures in the club's recent history, have expressed gratitude to Robertson. And all the praise is completely deserved. The Scottish player has dedicated himself to Liverpool throughout the long journey.
Of course, time does not wait for anyone. But is there any opinion that Robertson's number one left-back position should be threatened after the role he contributed to the Premier League title last season?

Last season, he started 29 matches in the Premier League and came on as a substitute for 4 matches. He was not used in 5 matches, but 2 of them were after the championship was decided. In terms of form and fitness, there is no sign that he is seriously declining.
It's never easy to leave a team like Liverpool. This is a very large part of my life and my family's for the past 9 years. But football is always moving, and I feel this is the right time to move on.
I had 9 wonderful years here. There were opportunities to leave, but I refused because it was too difficult to leave this club. I don't regret it. I have matured a lot, both on and off the pitch" - Robertson shared.