The power up passes - which I believe you are referring to as "tier" - can only bypass a tier on LT's power up card when said tier requires another one of his cards. If said tier requires training you need training not a PU pass.
If you want to use power up passes on his tier 9 you'd have to have the tier 6 PU pass I believe (91-92 ovr). The other ones you have won't help you bypass anything on LT's power up card - you need to find another card to use them on.
The 88 LT card alone doesn't do anything for you because that is only used to build his 92 overall legend card. Your only choice is to level up more and get the final PU pass and use it to bypass LT's tier 9 and then you'd have to add his harvest card to tier 10 to completely power him up.
The power up passes - which I believe you are referring to as "tier" - can only bypass a tier on LT's power up card when said tier requires another one of his cards. If said tier requires training you need training not a PU pass.
If you want to use power up passes on his tier 9 you'd have to have the tier 6 PU pass I believe (91-92 ovr). The other ones you have won't help you bypass anything on LT's power up card - you need to find another card to use them on.
The 88 LT card alone doesn't do anything for you because that is only used to build his 92 overall legend card. Your only choice is to level up more and get the final PU pass and use it to bypass LT's tier 9 and then you'd have to add his harvest card to tier 10 to completely power him up.