We need a player on the left who is ready to start - Son is sadly finished as a player who can manage playing midweek and weekend, and may well be a bench player able to do 45 mins next season.
Solomon is fine for a bottom half of PL team/top of Championship and at age 25 is not going to improve dramatically but that's not what Spurs want to be, so he's not a player Spurs should be looking to retain.
Tel has not shown much signs of progress in the half season he has been at Spurs, he still looks very raw and not showing signs of being the LW player (nor striker) who is a threat to the opposition - unlike Bergvall who by Christmas was becoming a regular first team player, looking very good and comparable with more experienced players and now towards end of his first season as a starting candidate for Spurs on merit.
So Tel is not the starting level we want (he's scored 1 penalty not earned by him and a goal he didn't know about as a Johnson cross him him and bounced into goal so productivity almost zero so far) - he might get there but he may not. At the moment at best he's a bench option and I'd much prefer he was not that as that blocks Moore's first team chances, and he's looked more threatening in first team at age 17 than Tel aged 20.
Odobert has shown more in a handful of games despite his injury, than Tel in half a season, so they are not comparable players although a similar age.
I don't see the use in paying a fee for Tel and his higher wages over Solomon. Neither of them are ideal but there's no point just wasting money. Even if we sell Solomon for say £20m, we're still going to need to add to that for Tel who seems to have a quality similar on the pitch at best.
