Lucas Vazquez is not a main player for Real Madrid and if Carvajal not got the injury Vazquez only played as subsutition player but Vazquez never complaining about this condition and showing his loyality for Real Madrid and playing for this team for 10 years which i think he can be considered as the legend but for right back Real Madrid has TAA and Carvajal who possibly will be fully recover from his injury so it's time for Vazquez to leave the team because i think Alonso won't played him regularly
Alonso wants a stronger and more complete squad, as there's no guarantee that any player will be injury-free next season. Therefore, Alonso must strive to retain Vazquez, as he is a reliable defensive player, which could also benefit Madrid if other players in the defense are unwell. And if Madrid can't retain Vazquez, they should at least find a more suitable replacement, whether that means bringing in an external player or training the current players.