It also depends on form house, You might think Walcott and Lennon will bring same attributes to the team but I don't think thats the case, the more options we have for those positions the better ans signing one or two class wingers would require another 1 or 2 as backups.
if we have 4 wingers and they are very similar players then when we need to change a game we need to bring on a player who will do thing differently pick different positions try different things like having lennon and albrighton they are different.
also what do you think to the idea of buying a winger for carroll and a winger for suarez? i.e sign mata type for suarez and albrighton or downing type for carroll